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{{Short description|1346–1353 pandemic in Eurasia and North Africa}}
{{Other uses|Black Death (disambiguation)}}
{{redirect|The Plague|other uses|The Plague (disambiguation)|and|Black Death (disambiguation)}}
{{Pp-vandalism|small=yes}}
{{Use British English|date=August 2016}}
{{Use dmy dates|date=January 2020}}
{{Infobox pandemic
| name = Black Death
| image = File:1346-1353 spread of the Black Death in Europe map.svg
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| alt = The spread of the Black Death in Europe and the ] (1346–1353)
| caption = The spread of the Black Death in ], ], and the ] (1346–1353)
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| disease = ]
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| location = ] and ]<ref name="plague-drug-resistant">{{cite magazine |author-last=Lawton |author-first=Graham |date=25 May 2022 |title=Plague: Black death bacteria persists and could cause a pandemic |url=https://www.newscientist.com/article/mg25433880-400-plague-never-went-away-now-it-could-re-emerge-in-drug-resistant-form/ |url-status=live |editor-last=Wilson |editor-first=Emily |editor-link=Emily Wilson (journalist) |magazine=] |location=London |issn=0262-4079 |archive-url=https://web.archive.org/web/20220530221812/https://www.newscientist.com/article/mg25433880-400-plague-never-went-away-now-it-could-re-emerge-in-drug-resistant-form/ |archive-date=30 May 2022 |access-date=31 May 2022}}</ref>
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| date = 1346–1353
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| deaths = 25,000,000 – 50,000,000 (estimated)
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The '''Black Death''' was a ] ] that occurred in ] from 1346 to 1353. It was one of the ] in human history; as many as {{nowrap|50 million}} people<ref name="lead numbers"/> perished, perhaps 50% of Europe's 14th century population.<ref>{{cite news|url=https://economictimes.indiatimes.com/markets/stocks/news/economic-life-after-covid-19-lessons-from-the-black-death/articleshow/74870296.cms?from=mdr|title=Economic life after Covid-19: Lessons from the Black Death|newspaper=The Economic Times|date=29 March 2020|access-date=4 April 2020|archive-date=21 June 2020|archive-url=https://web.archive.org/web/20200621020454/https://economictimes.indiatimes.com/markets/stocks/news/economic-life-after-covid-19-lessons-from-the-black-death/articleshow/74870296.cms?from=mdr|url-status=live}}</ref> The disease is caused by the ] '']'' and spread by ] and through the air.{{sfn|Haensch|Bianucci|Signoli|Rajerison|2010}}<ref>{{cite web|title=Plague|url=https://www.who.int/mediacentre/factsheets/fs267/en/|website=World Health Organization|access-date=8 November 2017|date=October 2017|archive-url=https://web.archive.org/web/20150424065540/http://www.who.int/mediacentre/factsheets/fs267/en/|archive-date=24 April 2015|url-status=live}}</ref> One of the most significant events in European history, the Black Death had far-reaching population, economic, and cultural impacts. It was the beginning of the ].<ref>{{Cite web|url=https://jmvh.org/article/the-history-of-plague-part-1-the-three-great-pandemics/|title=The History of Plague – Part 1. The Three Great Pandemics| vauthors = Firth J |date=April 2012|publisher=jmvh.org|url-status=dead|archive-url=https://web.archive.org/web/20191002022050/https://jmvh.org/article/the-history-of-plague-part-1-the-three-great-pandemics/|archive-date=2 October 2019|access-date=14 November 2019}}</ref> The plague created religious, social and economic upheavals, with profound effects on the course of European history.
] Bible (1411)]]
The '''Black Death''' was one of the deadliest ]s in ], peaking in Europe between 1348 and 1350. It is widely thought to have been an outbreak of ] caused by the bacterium '']'', although this view has been challenged by a number of scholars. Usually thought to have started in ], it had reached the ] by 1346. From there, probably carried by fleas residing on the black rats that were regular passengers on ], it spread throughout the ] and Europe. The Black Death caused large black swellings on the body.


The origin of the Black Death is disputed.<ref name="lead origin" /> Genetic analysis suggests ''Yersinia pestis'' bacteria evolved approximately 7,000 years ago, at the beginning of the ],<ref>{{cite journal |last1=Susat |first1=Julian |last2=Lübke |first2=Harald |last3=Immel |first3=Alexander |last4=Brinker |first4=Ute |last5=Macāne |first5=Aija |last6=Meadows |first6=John |last7=Steer |first7=Britta |last8=Tholey |first8=Andreas |last9=Zagorska |first9=Ilga |last10=Gerhards |first10=Guntis |last11=Schmölcke |first11=Ulrich |last12=Kalniņš |first12=Mārcis |last13=Franke |first13=Andre |last14=Pētersone-Gordina |first14=Elīna |last15=Teßman |first15=Barbara |last16=Tõrv |first16=Mari |last17=Schreiber |first17=Stefan |last18=Andree |first18=Christian |last19=Bērziņš |first19=Valdis |last20=Nebel |first20=Almut |last21=Krause-Kyora |first21=Ben |display-authors=1 |title=A 5,000-year-old hunter-gatherer already plagued by Yersinia pestis |journal=Cell Reports |volume=35 |issue=13 |date=29 June 2021 |doi=10.1016/j.celrep.2021.109278 |pmid=34192537 |doi-access=free }}</ref> with flea-mediated strains emerging around 3,800 years ago during the late ].<ref>{{cite journal |last1=Spyrou |first1=Maria A |last2=Tukhbatova |first2=Rezeda I |last3=Wang |first3=Chuan-Chao |last4=Andrades Valtueña |first4=Aida |last5=Lankapalli |first5=Aditya K |last6=Kondrashin |first6=Vitaly V |last7=Tsybin |first7=Victor A |last8=Khokhlov |first8=Aleksandr |last9=Kühnert |first9=Denise |last10=Herbig |first10=Alexander |last11=Bos |first11=Kirsten I |last12=Krause |first12=Johannes |title=Analysis of 3800-year-old Yersinia pestis genomes suggests Bronze Age origin for bubonic plague |journal=Nature Communications |volume=9 |date=2018 |issue=1 |page=2234 |doi=10.1038/s41467-018-04550-9 |pmid=29884871 |pmc=5993720 |bibcode=2018NatCo...9.2234S |display-authors=1 }}</ref> The immediate territorial origins of the Black Death and its outbreak remain unclear, with some evidence pointing towards ], China, the ], and Europe.<ref>{{Cite news |url=https://www.nytimes.com/2010/11/01/health/01plague.html |title=Europe's Plagues Came from China, Study Finds |work=The New York Times |date=31 October 2010 |access-date=24 February 2017 |archive-date=4 November 2010 |archive-url=https://web.archive.org/web/20101104083917/http://www.nytimes.com/2010/11/01/health/01plague.html |url-status=live |last1=Wade |first1=Nicholas }}</ref>{{sfn|Sussman|2011|p=354}} The pandemic was reportedly first introduced to Europe during the ] in ] by the ] army of ] in 1347. From Crimea, it was most likely carried by ] living on the ]s that travelled on ] ships, spreading through the ] and reaching ], ], and the rest of Europe via ], ], and the ].<ref>{{Cite web |url=https://www.britannica.com/event/Black-Death |title=Black Death &#124; Causes, Facts, and Consequences |access-date=1 August 2019 |archive-date=9 July 2019 |archive-url=https://web.archive.org/web/20190709135155/https://www.britannica.com/event/Black-Death |website=Encyclopædia Britannica |url-status=live }}</ref> There is evidence that once it came ashore, the Black Death mainly spread from person-to-person as ], thus explaining the quick inland spread of the epidemic, which was faster than would be expected if the primary ] was ]s causing bubonic plague.{{sfn|Snowden|2019|pp=49–53}}<ref>{{Cite web |title=Plague |url=https://www.who.int/news-room/fact-sheets/detail/plague |access-date=2024-07-23 |website=www.who.int |language=en |archive-date=30 April 2018 |archive-url=https://web.archive.org/web/20180430115308/https://www.who.int/news-room/fact-sheets/detail/plague |url-status=live }}</ref><ref>{{Cite news |last=McCoy |first=Terrence |date=2021-10-26 |title=Everything you know about the Black Death is wrong |url=https://www.washingtonpost.com/news/morning-mix/wp/2014/03/31/everything-you-know-about-the-black-death-is-wrong-say-the-bones/ |access-date=2024-07-23 |newspaper=Washington Post |language=en-US |issn=0190-8286 |archive-date=27 August 2016 |archive-url=https://web.archive.org/web/20160827172208/https://www.washingtonpost.com/news/morning-mix/wp/2014/03/31/everything-you-know-about-the-black-death-is-wrong-say-the-bones/ |url-status=live }}</ref> In 2022, it was discovered that there was a sudden surge of deaths in what is today Kyrgyzstan from the Black Death in the late 1330s; when combined with genetic evidence, this implies that the initial spread may have been unrelated to the 14th century ] previously postulated as the cause.<ref>{{Cite web |date=2022-06-15 |title=Mystery of Black Death's origins solved, say researchers |url=https://www.theguardian.com/society/2022/jun/15/mystery-black-death-origins-solved-plague-pandemic |access-date=2022-06-15 |website=The Guardian |language=en |archive-date=15 June 2022 |archive-url=https://web.archive.org/web/20220615232333/https://www.theguardian.com/society/2022/jun/15/mystery-black-death-origins-solved-plague-pandemic |url-status=live }}</ref><ref name="Spyrou 1–7">{{Cite journal |last1=Spyrou |first1=Maria A. |last2=Musralina |first2=Lyazzat |last3=Gnecchi Ruscone |first3=Guido A. |last4=Kocher |first4=Arthur |last5=Borbone |first5=Pier-Giorgio |last6=Khartanovich |first6=Valeri I. |last7=Buzhilova |first7=Alexandra |last8=Djansugurova |first8=Leyla |last9=Bos |first9=Kirsten I. |last10=Kühnert |first10=Denise |last11=Haak |first11=Wolfgang |date=2022-06-15 |title=The source of the Black Death in fourteenth-century central Eurasia |journal=Nature |volume=606 |issue=7915 |language=en |pages=718–724 |doi=10.1038/s41586-022-04800-3 |pmid=35705810 |pmc=9217749 |bibcode=2022Natur.606..718S |s2cid=249709693 |issn=1476-4687}}</ref>
The Black Death is estimated to have killed 30% - 60% of Europe's population, reducing the ] from an estimated 450&nbsp;million to between 350 and 375&nbsp;million in 1400. This has been seen as creating a series of religious, social and economic upheavals which had profound effects on the course of ]. It took 150&nbsp;years for Europe's population to recover. The plague returned at various times, killing more people, until it left Europe in the 19th century. Because the plague killed so many of the poor population, wealthy land owners were forced to pay the remaining workers what they asked, in terms of wages. Because there was now a surplus in consumer goods, luxury crops could now be grown. This meant that for the first time in history, many, formerly of the peasant population, now had a chance to live a better life. Most historians now feel that this was the start of the middle class in Europe and England.


The Black Death was the second great natural disaster to strike Europe during the ] (the first one being the ]) and is estimated to have killed 30% to 60% of the European population, as well as approximately 33% of the population of the Middle East.{{sfn|Aberth|2010|pp=9–13}}{{sfn|Alchon|2003|p=21}}<ref>{{Cite web| vauthors = Howard J |date=6 July 2020|title=Plague was one of history's deadliest diseases{{snd}}then we found a cure|url=https://www.nationalgeographic.com/science/health-and-human-body/human-diseases/the-plague/ |website=National Geographic|access-date=3 December 2020|archive-date=2 December 2020|archive-url=https://web.archive.org/web/20201202201701/https://www.nationalgeographic.com/science/health-and-human-body/human-diseases/the-plague/ |url-status=dead}}</ref> There were further outbreaks throughout the Late Middle Ages and, also due to other contributing factors (the ]), the European population did not regain its 14th century level until the 16th century.{{efn|Declining temperatures following the end of the ] added to the crisis.}}<ref>{{cite journal | vauthors = Galens J, Knight J |title=The Late Middle Ages |journal=Middle Ages Reference Library |year=2001 |volume=1 |url=http://ic.galegroup.com/ic/whic/ReferenceDetailsPage/ReferenceDetailsWindow?displayGroupName=Reference&prodId=WHIC&action=e&windowstate=normal&catId=&documentId=GALE%7CCX3426200028&mode=view&userGroupName=holl83564&jsid=33d6ba6bd380219c2073e86fda0b07d0 |publisher=Gale |access-date=15 May 2020 |archive-date=16 December 2019 |archive-url=https://web.archive.org/web/20191216115220/http://ic.galegroup.com/ic/whic/ReferenceDetailsPage/ReferenceDetailsWindow?displayGroupName=Reference&prodId=WHIC&action=e&windowstate=normal&catId=&documentId=GALE%7CCX3426200028&mode=view&userGroupName=holl83564&jsid=33d6ba6bd380219c2073e86fda0b07d0 |url-status=live }}</ref> Outbreaks of the plague recurred around the world until the early 19th century.
==Overview==
Some historians believe the pandemic began in Mongolia or Central Asian (one suggested location is Lake ])<ref>] from an estimated 450&nbsp;million to between 350 and 375&nbsp;million in 1400.<ref>{{cite web |url=http://www.census.gov/ipc/www/worldhis.html |title=Historical Estimates of World Population |publisher=Census.gov |date= |accessdate=2008-11-03}}</ref>


==<span id="Etymology"></span><span id="Name"></span><span id="Naming"></span>Names==
The plague is thought to have returned every generation with varying ] and mortality until the 18th century.<ref>{{cite web |url=http://www.infoplease.com/cig/dangerous-diseases-epidemics/bubonic-plague.html |title=Epidemics of the Past: Bubonic Plague—Infoplease.com |publisher=Infoplease.com |date= |accessdate=2008-11-03}}</ref> During this period, more than 100 plague ] swept across Europe.<ref name="Revill">{{cite news |url=http://www.guardian.co.uk/uk/2004/may/16/health.books |title=Black Death blamed on man, not rats &#124; UK news &#124; The Observer |publisher=The Observer |author=Jo Revill |date= 2004-05-17|accessdate=2008-11-03 | location=London}}</ref> On its return in 1603, for example, the plague killed 38,000&nbsp;Londoners.<ref>{{cite web |url=http://www.1911encyclopedia.org/Plague |title=Plague{{–}} LoveToKnow 1911 |publisher=1911encyclopedia.org |date= |accessdate=2008-11-03}}</ref> Other notable 17th-century outbreaks were the ], and the ] (1647–1652), the ] (1665–1666),<ref>{{cite web |url=http://urbanrim.org.uk/plague%20list.htm |title=A LIST OF NATIONAL EPIDEMICS OF PLAGUE IN ENGLAND 1348-1665 |publisher=Urbanrim.org.uk |date= |accessdate=2008-11-03}}</ref> and the ] (1679). There is some controversy over the identity of the disease, but in its virulent form, after the ] in 1720–1722,<ref>{{cite web |url=http://www.beyond.fr/history/plague.html |title=Plague History Provence, - by Provence Beyond |publisher=Beyond.fr |date= |accessdate=2008-11-03}}</ref> the ] (which hit eastern Europe), and the ], it seems to have gradually disappeared from Europe. By the early 19th century, the threat of plague had diminished, but it was quickly replaced by a new disease. The ] was the first of several ] pandemics to sweep through Asia and Europe during the 19th and 20th centuries.<ref>"". CBC News. December 2, 2008.</ref>
European writers contemporary with the plague described the disease in Latin as {{Langx|la|pestis|label=none|link=no}} or {{Langx|la|pestilentia|link=no|lit=pestilence|label=none}}; {{Langx|la|epidemia|links=no|lit=epidemic|label=none}}; {{Langx|la|mortalitas|link=no|lit=mortality|label=none}}.<ref name=":1">{{Citation|title=Black Death, n.|url=https://www.oed.com/view/Entry/280254|work=Oxford English Dictionary Online|year=2011|edition=3rd|publisher=Oxford University Press|language=en-GB|access-date=2020-04-11|archive-date=22 May 2021|archive-url=https://web.archive.org/web/20210522013812/https://www.oed.com/view/Entry/280254|url-status=live}}</ref> In English prior to the 18th century, the event was called the "pestilence" or "great pestilence", "the plague" or the "great death".<ref name=":1" />{{sfn|Bennett|Hollister|2006|p=326}}<ref>John of Fordun's ''Scotichronicon'' ("there was a great pestilence and mortality of men") {{harvnb|Horrox|1994|p=84}}</ref> Subsequent to the pandemic "the ''furste moreyn''" (first ]) or "first pestilence" was applied, to distinguish the mid-14th century phenomenon from other infectious diseases and epidemics of plague.<ref name=":1" />


The 1347 pandemic plague was not referred to specifically as "black" in the time of occurrence in any European language, though the expression "black death" had occasionally been applied to fatal disease beforehand.<ref name=":1" /> "Black death" was not used to describe the plague pandemic in English until the 1750s; the term is first attested in 1755, where it translated {{Langx|da|den sorte død|lit=the black death}}.<ref name=":1" /><ref>{{cite book | vauthors = Pontoppidan E |title=The Natural History of Norway: … |date=1755 |publisher=A. Linde |location=London |page=24 |url=https://archive.org/details/naturalhistoryNc2Pont/page/n57}} From p. 24: "Norway, indeed, cannot be said to be entirely exempt from pestilential distempers, for the Black-death, known all over Europe by its terrible ravages, from the years 1348 to 50, was felt here as in other parts, and to the great diminution of the number of the inhabitants."</ref> This expression as a proper name for the pandemic had been popularized by Swedish and Danish chroniclers in the 15th and early 16th centuries, and in the 16th and 17th centuries was transferred to other languages as a ]: {{Langx|is|svarti dauði}}, {{Langx|de|der schwarze Tod}}, and {{Langx|fr|la mort noire}}.<ref name=":2">{{Cite journal| vauthors = d'Irsay S |date=1926|title=Notes to the Origin of the Expression: ≪ Atra Mors ≫|journal=Isis|volume=8|issue=2|pages=328–32 |doi=10.1086/358397|jstor=223649|s2cid=147317779|issn=0021-1753}}</ref><ref>The German physician ] (1795–1850) cited the phrase in Icelandic (''{{lang|is|Svarti Dauði}}''), Danish (''{{lang|da|den sorte Dod}}''), etc. See: {{cite book |last1=Hecker |first1=J. F. C. |title=Der schwarze Tod im vierzehnten Jahrhundert |trans-title=The Black Death in the Fourteenth Century |date=1832 |publisher=Friedr. Aug. Herbig |location=Berlin, (Germany) |page=3, footnote 1 |url=https://archive.org/details/bub_gb_LhoqAAAAYAAJ/page/n11 |language=German |access-date=19 July 2024 |archive-date=29 April 2016 |archive-url=https://web.archive.org/web/20160429081540/https://books.google.com/books?id=LhoqAAAAYAAJ&pg=PA3 |url-status=dead }}</ref> Previously, most European languages had named the pandemic a variant or calque of the {{Langx|la|magna mortalitas|lit=Great Death}}.<ref name=":1" />
The ] eruption of the Black Death had a drastic effect on Europe's population, irrevocably changing the social structure. It was, arguably, a serious blow to the ], and resulted in widespread persecution of minorities such as ], foreigners, beggars, and ]. The uncertainty of daily survival has been seen as creating a general mood of morbidity, influencing people to "live for the moment", as illustrated by ] in '']'' (1353).<ref></ref>


The phrase 'black death' – describing ] as black – is very old. ] used it in the ] to describe the monstrous ], with her mouths "full of black Death" ({{Langx|grc|πλεῖοι μέλανος Θανάτοιο|translit=pleîoi mélanos Thanátoio}}).<ref>Homer, ''Odyssey'', XII, 92.</ref><ref name=":2" /> ] may have been the first to describe an epidemic as 'black death', ({{Langx|la|mors atra}}) but only in reference to the acute lethality and dark ] of disease.<ref>Seneca, ''Oedipus'', 164–70.</ref><ref name=":2" /><ref name=":1" /> The 12th–13th century French physician ] had already used ''{{lang|la|atra mors}}'' to refer to a "pestilential fever" ({{Langx|la|febris pestilentialis|label=none}}) in his work ''On the Signs and Symptoms of Diseases'' ({{Langx|la|De signis et symptomatibus aegritudium|label=none}}).<ref name=":2" /><ref>{{Cite book|url=https://archive.org/details/egidiicorbolien02rosegoog|title=Egidii Corboliensis Viaticus: De signis et symptomatibus aegritudium|publisher=In aedibus B.G. Teubneri| vauthors = de Corbeil G |date=1907| veditors = Valentin R |location=Harvard University|language=la|orig-year=1200}}</ref> The phrase {{Langx|la|mors nigra|lit=black death|label=none}}, was used in 1350 by Simon de Covino (or Couvin), a Belgian astronomer, in his poem "On the Judgement of the Sun at a Feast of Saturn" ({{Langx|la|De judicio Solis in convivio Saturni|label=none}}), which attributes the plague to an astrological ] of Jupiter and Saturn.<ref>On page 22 of the manuscript in {{Webarchive|url=https://web.archive.org/web/20161006064435/http://gallica.bnf.fr/ark:/12148/btv1b9078277z/f25.image |date=6 October 2016 }}, Simon mentions the phrase "''mors nigra''" (Black Death): "''Cum rex finisset oracula judiciorum / Mors nigra surrexit, et gentes reddidit illi'';" (When the king ended the oracles of judgment / Black Death arose, and the nations surrendered to him;).
===Naming===
* A more legible copy of the poem appears in: Emile Littré (1841) {{Webarchive|url=https://web.archive.org/web/20140722010105/http://www.persee.fr/web/revues/home/prescript/article/bec_0373-6237_1841_num_2_1_451584?_Prescripts_Search_tabs1=standard& |date=22 July 2014 }} (Work concerning the plague of 1348, composed by a contemporary), ''Bibliothèque de l'école des chartes'', '''2''' (2) : 201–43; see especially p. 228.
] people called the catastrophe of the 14th century either the "Great Pestilence"' or the "Great Plague".<ref name=Bennet&Hollister2006>J. M. Bennett and C. W. Hollister, ''Medieval Europe: A Short History'' (New York: McGraw-Hill, 2006), p. 326.</ref> Writers contemporary to the plague referred to the event as the "Great Mortality". Swedish and Danish chronicles of the 16th century described the events as "black" for the first time, not to describe the late-stage sign of the disease, in which the sufferer's skin would blacken due to subepidermal hemorrhages (]), and the extremities would darken with gangrene (]), as the term is more likely to refer to black in the sense of glum, lugubrious, or dreadful as to denote the terribleness and gloom of the events.<ref>S. Barry and N. Gualde, "The Biggest Epidemic of History" (La plus grande épidémie de l'histoire), '']'' n°310, (2006), p. 38.</ref> The German physician and medical writer ] took that precise idea from the Latin ''atra mors'' when he described the catastrophe in 1832<ref name=Bennet&Hollister2006/> in his publication ''"Der schwarze Tod im vierzehnten Jahrhundert"''. The work was translated into English the following year, and under the influence of the ] epidemic of that time, ''"The Black Death in the 14th century"'' gained widespread attention which coined the term ''Schwarzer Tod'' and ''Black Death'' in the German and English speaking worlds, respectively.
* See also: Joseph Patrick Byrne, ''The Black Death'' (Westport, Connecticut: Greenwood Press, 2004), {{Webarchive|url=https://web.archive.org/web/20160426053818/https://books.google.com/books?id=yw3HmjRvVQMC&pg=PA1 |date=26 April 2016 }}</ref> His use of the phrase is not connected unambiguously with the plague pandemic of 1347 and appears to refer to the fatal outcome of disease.<ref name=":1" />


The historian Cardinal ] wrote about the Great Pestilence in 1893{{sfn|Gasquet|1893}} and suggested that it had been "some form of the ordinary Eastern or bubonic plague".{{sfn|Christakos|Olea|Serre|Wang|2005|pp=110–14}}{{efn|He was able to adopt the epidemiology of the bubonic plague for the Black Death for the second edition in 1908, implicating rats and fleas in the process, and his interpretation was widely accepted for other ancient and medieval epidemics, such as the ] that was prevalent in the ] from 541 to 700&nbsp;CE.{{sfn|Christakos|Olea|Serre|Wang|2005|pp=110–14}}}} In 1908, Gasquet said use of the name ''{{lang|la|atra mors}}'' for the 14th-century epidemic first appeared in a 1631 book on Danish history by ]: "Commonly and from its effects, they called it the black death" (''{{lang|la|Vulgo & ab effectu atram mortem vocitabant}}'').{{sfn|Gasquet|1908|p=7}}<ref>Johan Isaksson Pontanus, ''Rerum Danicarum Historia'' ... (Amsterdam (Netherlands): Johann Jansson, 1631), {{Webarchive|url=https://web.archive.org/web/20160504221100/https://books.google.com/books?id=HaExAQAAMAAJ&pg=PA476|date=4 May 2016}}</ref>
==Migration==

==Previous plague epidemics==
{{Main|Plague (disease)|First plague pandemic}}
]'' (200 × magnification), the bacterium that causes plague<ref>{{cite web|title=Plague Backgrounder|url=http://www.avma.org/public_health/biosecurity/plague_bgnd.asp|publisher=Avma.org|archive-url=https://web.archive.org/web/20080516012329/http://www.avma.org/public_health/biosecurity/plague_bgnd.asp|archive-date=16 May 2008|access-date=3 November 2008}}</ref>]]

Research from 2017 suggests plague first infected humans in Europe and Asia in the ]-].{{sfn|Andrades Valtueña|Mittnik|Key|Haak|2017}} Research in 2018 found evidence of '']'' in an ancient Swedish tomb, which may have been associated with the "]" around 3000 BCE, in which European populations fell significantly.<ref>Zhang, Sarah, " {{Webarchive|url=https://web.archive.org/web/20191113183612/https://www.theatlantic.com/science/archive/2018/12/4900-year-old-case-plague-sweden/577315/ |date=13 November 2019 }}", ''The Atlantic'', 6 December 2018</ref>{{sfn|Rascovan|Sjögren|Kristiansen|Nielsen|2019}} This ''Y. pestis'' may have been different from more modern types, with bubonic plague transmissible by fleas first known from Bronze Age remains near ].{{sfn|Spyrou|Tukhbatova|Wang|Valtueña|2018}}

The symptoms of bubonic plague are first attested in a ] of ] preserved by ]; these ancient medical authorities suggest bubonic plague had appeared in the ] before the reign of ], six centuries before arriving at ] in the reign of ].{{sfn|Green|2015|pages=31ff}} In 2013, researchers confirmed earlier speculation that the cause of the ] (541–549 CE, with recurrences until 750) was ''Y''. ''pestis''.<ref>{{cite web |url=http://phys.org/news/2013-05-modern-lab-ages-plague-dna.html |title=Modern lab reaches across the ages to resolve plague DNA debate |publisher=phys.org |date=20 May 2013 |access-date=22 March 2020 |archive-url=https://web.archive.org/web/20190727034311/https://phys.org/news/2013-05-modern-lab-ages-plague-dna.html |archive-date=27 July 2019 |url-status=live }}</ref><ref>{{cite web |url=http://news.nationalpost.com/2014/01/28/plague-dna-found-in-ancient-teeth-shows-medieval-black-death-1500-year-pandemic-caused-by-same-disease/ |title=Plague DNA found in ancient teeth shows medieval Black Death, 1,500-year pandemic caused by same disease |work=National Post |date=28 January 2014 | vauthors = Cheng M |access-date=22 March 2020 |archive-url=https://archive.today/20140129115824/http://news.nationalpost.com/2014/01/28/plague-dna-found-in-ancient-teeth-shows-medieval-black-death-1500-year-pandemic-caused-by-same-disease/ |archive-date=29 January 2014 |url-status=live }}</ref> This is known as the ]. In 610, the Chinese physician ] described a "malignant bubo" "coming in abruptly with high fever together with the appearance of a bundle of nodes beneath the tissue."<ref>{{Cite book|url=https://books.google.com/books?id=KjLHAOE7irsC&pg=PA41|isbn=9781843832140|title=The Black Death, 1346-1353: The Complete History|year=2006|publisher=Boydell Press|access-date=18 March 2023|archive-date=26 March 2023|archive-url=https://web.archive.org/web/20230326164814/https://books.google.com/books?id=KjLHAOE7irsC&pg=PA41|url-status=live}}</ref> The Chinese physician Sun Simo who died in 652 also mentioned a "malignant bubo" and plague that was common in ] (]). Ole Jørgen Benedictow believes that this indicates it was an offshoot of the first plague pandemic which made its way eastward to Chinese territory by around 600.<ref>{{Cite book |url=https://books.google.com/books?id=HkI3EAAAQBAJ&pg=PA130 |title=The Complete History of the Black Death |year=2021 |publisher=Boydell & Brewer |isbn=9781783275168 |access-date=18 March 2023 |archive-date=26 March 2023 |archive-url=https://web.archive.org/web/20230326164814/https://books.google.com/books?id=HkI3EAAAQBAJ&pg=PA130 |url-status=live }}</ref>

==14th-century plague==

===Causes===

====Early theory====
{{Main|Theories of the Black Death}}

A report by the Medical Faculty of Paris stated that a conjunction of planets had caused "a great pestilence in the air" (]).{{sfn|Horrox|1994|p=159}} Muslim religious scholars taught that the pandemic was a "martyrdom and mercy" from God, assuring the believer's place in paradise. For non-believers, it was a punishment.{{sfn|Kelly|2006}}{{Page needed|date=October 2024}} Some Muslim doctors cautioned against trying to prevent or treat a disease sent by God. Others adopted preventive measures and treatments for plague used by Europeans. These Muslim doctors also depended on the writings of the ancient Greeks.<ref>{{cite book | vauthors = al-Asqalani IH |title=Badhl aI-md'On fi fadi at-ld'an |location=Cairo |url=https://archive.org/details/Library.mmn_20150901/mode/2up}}</ref><ref>{{cite thesis |vauthors=Legan JA |title=The medical response to the Black Death |date=2015 |type=B.A. |work=Senior Honors Projects |number=103 |url=https://commons.lib.jmu.edu/honors201019/103 |publisher=James Madison University |access-date=3 December 2020 |archive-date=19 October 2021 |archive-url=https://web.archive.org/web/20211019202939/https://commons.lib.jmu.edu/honors201019/103/ |url-status=live }}</ref>

====Predominant modern theory====
{{Multiple image
|align = right
|direction = horizontal
|image1 = Xenopsylla chepsis (oriental rat flea).jpg
|width1 = 214
|caption1 = The ] (''Xenopsylla cheopis'') engorged with blood. This ] of flea is the primary ] for the transmission of '']'', the organism responsible for spreading bubonic plague in most plague epidemics. Both male and female fleas ] and can transmit the infection.
|image2 = Flea infected with yersinia pestis.jpg
|width2 = 180
|caption2 = Oriental rat flea (''Xenopsylla cheopis'') infected with the '']'' ] which appears as a dark mass in the gut. The foregut (''proventriculus'') of this flea is blocked by a ''Y. pestis'' ]; when the flea feeds on an uninfected ] ''Y. pestis'' is regurgitated into the wound, causing infection.
}}

Due to ], rodents began to flee the dried-out grasslands to more populated areas, spreading the disease.{{sfn|Tignor|Brown|Liu|Shaw|2014|p=407}} The plague disease, caused by the bacterium '']'', is ] (commonly present) in populations of fleas carried by ground ]s, including ]s, in various areas, including ], ], ], ], ], and the western United States.{{sfn|Ziegler|1998|p=25}}<ref>{{Cite web|url=https://www.cdc.gov/plague/maps/index.html|title=Maps and Statistics: Plague in the United States|date=25 November 2019|website=]|access-date=8 April 2020|archive-date=8 April 2020|archive-url=https://web.archive.org/web/20200408090846/https://www.cdc.gov/plague/maps/index.html|url-status=live}}</ref>

''Y. pestis'' was discovered by ], a pupil of ], during an ] in Hong Kong in 1894; Yersin also proved this bacterium was present in rodents and suggested the rat was the main vehicle of transmission.{{sfn|Arrizabalaga|2010}}<ref>{{Cite journal| vauthors = Yersin A |year=1894|title=La peste bubonique a Hong-Kong|url=https://gallica.bnf.fr/ark:/12148/bpt6k58345103/f54|journal=Annales de l'Institut Pasteur: Journal de microbiologie|volume=8|issue=9|pages=662–67|issn=0020-2444|via=Gallica|access-date=12 April 2020|archive-date=12 April 2020|archive-url=https://web.archive.org/web/20200412092843/https://gallica.bnf.fr/ark:/12148/bpt6k58345103/f54|url-status=live}}</ref> The mechanism by which ''Y. pestis'' is usually transmitted was established in 1898 by ] and was found to involve the bites of fleas whose ]s had become obstructed by replicating ''Y. pestis'' several days after feeding on an infected host.<ref>{{cite journal |last1=Simond |first1=P.-L. |title=La propagation de la peste |journal=Annales de l'Institut Pasteur |date=October 1898 |volume=12 |issue=10 |pages=625–687 |url=https://www.biodiversitylibrary.org/item/22266#page/633/mode/1up |trans-title=The spread of the plague |language=French |access-date=18 July 2024 |archive-date=18 July 2024 |archive-url=https://web.archive.org/web/20240718010607/https://www.biodiversitylibrary.org/item/22266#page/633/mode/1up |url-status=live }} From p. 674: ''"Nous avon pratiqué un certain nombre de fois l'examen microscopique du contenu intestinal des puces recueillies sur les rats spontanément pestiférés, et dans plusieurs cas nous avons constaté la présence d'un bacille morphologiquement semblable à celui de la peste."'' ("We carried out a number of times microscopic examinations of the intestinal contents of fleas collected from rats infected with plague, and in several cases we noted the presence of a bacillus morphologically similar to that of the plague.")</ref> This blockage starves the fleas, drives them to aggressive feeding behaviour, and causes them to try to clear the blockage via ], resulting in thousands of plague bacteria flushing into the feeding site and infecting the host. The bubonic plague mechanism was also dependent on two populations of rodents: one resistant to the disease, which act as ]s, keeping the disease ], and a second that lacks resistance. When the second population dies, the fleas move on to other hosts, including people, thus creating a human ].{{sfn|Christakos|Olea|Serre|Wang|2005|pp=110–14}}

====DNA evidence====
], near ] in southern France, yielded molecular evidence of the ''orientalis'' strain of ''Yersinia pestis'', the organism responsible for bubonic plague. The second pandemic of bubonic plague was active in Europe from&nbsp;1347, the beginning of the Black Death, until 1750.]]

Definitive confirmation of the role of ''Y. pestis'' arrived in 2010 with a publication in '']'' by Haensch et al.{{sfn|Haensch|Bianucci|Signoli|Rajerison|2010}}{{efn|In 1998, Drancourt et al. reported the detection of ''Y. pestis'' DNA in human dental pulp from a medieval grave.<ref>{{cite journal | vauthors = Drancourt M, Aboudharam G, Signoli M, Dutour O, Raoult D | title = Detection of 400-year-old Yersinia pestis DNA in human dental pulp: an approach to the diagnosis of ancient septicemia | journal = Proceedings of the National Academy of Sciences of the United States of America | volume = 95 | issue = 21 | pages = 12637–12640 | date = October 1998 | pmid = 9770538 | pmc = 22883 | doi = 10.1073/pnas.95.21.12637 | bibcode = 1998PNAS...9512637D | doi-access = free | issn=0027-8424}}</ref> Another team led by ] cast doubt on this identification{{sfn|Gilbert|Cuccui|White|Lynnerup|2004}} and the techniques employed, stating that this method "does not allow us to confirm the identification of Y. pestis as the ] agent of the Black Death and subsequent plagues. In addition, the utility of the published tooth-based ancient DNA technique used to diagnose fatal ]s in historical epidemics still awaits independent corroboration".}} They assessed the presence of ]/] with ] (PCR) techniques for ''Y. pestis'' from the ]s in human skeletons from mass graves in northern, central and southern Europe that were associated archaeologically with the Black Death and subsequent resurgences. The authors concluded that this new research, together with prior analyses from the south of France and Germany, "ends the debate about the cause of the Black Death, and unambiguously demonstrates that ''Y. pestis'' was the ] of the epidemic plague that devastated Europe during the Middle Ages".{{sfn|Haensch|Bianucci|Signoli|Rajerison|2010}} In 2011 these results were further confirmed with genetic evidence derived from Black Death victims in the ] burial site in England. Schuenemann et al. concluded in 2011 "that the Black Death in medieval Europe was caused by a variant of ''Y. pestis'' that may no longer exist".{{sfn|Bos|2011}}

Later in 2011, ] et al. reported in '']'' the first draft genome of ''Y. pestis'' from plague victims from the same East Smithfield cemetery and indicated that the strain that caused the Black Death is ancestral to most modern strains of ''Y. pestis''.{{sfn|Bos|2011}}

Later genomic papers have further confirmed the ] placement of the ''Y. pestis'' strain responsible for the Black Death as both the ancestor{{sfn|Spyrou|Keller|Tukhbatova|Scheib|2019}} of later plague epidemics—including the ]—and the descendant{{sfn|Wagner|Klunk|Harbeck|Devault|2014}} of the strain responsible for the ]. In addition, plague genomes from prehistory have been recovered.{{sfn|Rasmussen|Allentoft|Nielsen|Orlando|2015}}

DNA taken from 25 skeletons from 14th-century London showed that plague is a strain of ''Y. pestis'' almost identical to that which ].<ref name=guardian/><ref>{{Cite news|url=https://www.bbc.co.uk/news/science-environment-26770334|title=Black Death skeletons unearthed by Crossrail project| vauthors = Morgan J |date=30 March 2014|work=BBC News|access-date=20 August 2017|language=en-GB|archive-url=https://web.archive.org/web/20171225001808/http://www.bbc.co.uk/news/science-environment-26770334|archive-date=25 December 2017|url-status=live}}</ref> Further DNA evidence also proves the role of ''Y. pestis'' and traces the source to the ] mountains in ].<ref>{{cite web|url=https://www.cnn.com/2022/06/15/health/black-death-plague-source-identified-scn/index.html|publisher=CNN|last=Hunt|first=Katie|title=DNA analysis reveals source of Black Death|date=June 15, 2022|access-date=June 18, 2022|archive-date=18 June 2022|archive-url=https://web.archive.org/web/20220618150441/https://www.cnn.com/2022/06/15/health/black-death-plague-source-identified-scn/index.html|url-status=live}}</ref>

====Alternative explanations====
Researchers are hampered by a lack of reliable statistics from this period. Most work has been done on the spread of the disease in England, where estimates of overall population at the start of the plague vary by over 100%, as no census was undertaken in England between the time of publication of the ] of 1086 and the ] of the year 1377.{{sfn|Ziegler|1998|p=233}} Estimates of plague victims are usually ]d from figures for the clergy.

] is used to match the spreading patterns and the means of ]. In 2018 researchers suggested an alternative model in which ''"the disease was spread from human fleas and body lice to other people".'' The second model claims to better fit the trends of the plague's death toll, as the rat-flea-human hypothesis would have produced a delayed but very high spike in deaths, contradicting historical death data.<ref>{{cite news| vauthors = Guarino B |date=2018-01-16|newspaper=]|url=https://www.washingtonpost.com/news/speaking-of-science/wp/2018/01/16/the-classic-explanation-for-the-black-death-plague-is-wrong-scientists-say/|title=The classic explanation for the Black Death plague is wrong, scientists say|archive-url=https://archive.today/20180122005044/https://www.washingtonpost.com/news/speaking-of-science/wp/2018/01/16/the-classic-explanation-for-the-black-death-plague-is-wrong-scientists-say/|archive-date=22 January 2018|access-date=2 April 2020|url-status=live}}</ref><ref>{{cite news|title=Rats May Not Be to Blame for Spreading the 'Black Death'| vauthors = Rettner R |publisher=]|date=2018-01-17|url=https://www.livescience.com/61444-black-death-cause-found-transmission.html|access-date=2 April 2020|archive-date=28 March 2020|archive-url=https://web.archive.org/web/20200328004408/https://www.livescience.com/61444-black-death-cause-found-transmission.html|url-status=live}}</ref>

] argued that these authors "take it for granted that Simond's infection model, black rat → rat flea → human, which was developed to explain the spread of plague in India, is the only way an epidemic of ''Yersinia pestis'' infection could spread".{{sfn|Walløe|2008|p=69}} Similarly, ] has argued that greater attention is needed to the range of (especially non-]) animals that might be involved in the transmission of plague.{{sfn|Green|2015|pages=31ff}}

Archaeologist Barney Sloane has argued that there is insufficient evidence of the extinction of numerous rats in the archaeological record of the medieval waterfront in London, and that the disease spread too quickly to support the thesis that ''Y. pestis'' was spread from fleas on rats; he argues that transmission must have been person to person.<ref>{{Cite news | vauthors = Kennedy M |title=Black Death study lets rats off the hook |journal=The Guardian |isbn=978-0-7524-2829-1 |place=London |url=https://www.theguardian.com/world/2011/aug/17/black-death-rats-off-hook |year=2011 |access-date=14 December 2016 |archive-url=https://web.archive.org/web/20130827191239/http://www.theguardian.com/world/2011/aug/17/black-death-rats-off-hook |archive-date=27 August 2013 |url-status=live }}</ref>{{sfn|Sloane|2011}} This theory is supported by research in 2018 which suggested transmission was more likely by body lice and ]s during the ].{{sfn|Dean|Krauer|Walløe|Lingjærde|2018}}

====Summary====
Academic debate continues, but no single alternative explanation for the plague's spread has achieved widespread acceptance.{{sfn|Christakos|Olea|Serre|Wang|2005|pp=110–14}} Many scholars arguing for ''Y. pestis'' as the major agent of the pandemic suggest that its extent and symptoms can be explained by a combination of bubonic plague with other diseases, including ], ], and ]s. In addition to the bubonic infection, others point to additional ] and ] forms of plague, which lengthen the duration of outbreaks throughout the seasons and help account for its high mortality rate and additional recorded symptoms.<ref name="Byrne2004pp21-9">{{harvnb|Byrne|2004|pp=21–29}}</ref> In 2014, ] announced the results of an examination of 25 bodies exhumed in the ] area of London, as well as of wills registered in London during the period, which supported the pneumonic hypothesis.<ref name="guardian" /> Currently, while ]s have conclusively verified the presence of ''Y. pestis'' bacteria in burial sites across northern Europe through examination of bones and ], no other epidemic pathogen has been discovered to bolster the alternative explanations.{{sfn|Snowden|2019|pp=50–51}}

===Transmission===
{{Main|Black Death migration}} {{Main|Black Death migration}}
] (red) and ] (green) maritime trade routes in the ] and ]]]
]


====Lack of hygiene====
The plague disease, generally thought to be caused by '']'', is ] (commonly present) in populations of ground ]s (most specifically, the ''bobac'' variety of ])<ref>S. Fry, ''The Book of General Ignorance'' (London, 2006).</ref> in ], but it is not entirely clear where the 14th-century pandemic started. The popular theory places the first cases in the ]s of Central Asia, although some speculate{{Who|date=April 2010}} that it originated around northern India, and others, such as the historian Michael W. Dols, argue that the historical evidence concerning epidemics in the Mediterranean and specifically the ] point to a probability that the Black Death originated in Africa and spread to Central Asia, where it then became entrenched among the rodent population.<ref>M. W. Dols, "The Second Plague Pandemic and its Recurrences in the Middle East: 1347–1894" ''Journal of the Economic Social History of the Orient'' vol. 22, no. 2 (May 1979), pp. 170–1.</ref> Nevertheless, from Central Asia it was carried east and west along the ], by ] armies and traders making use of the opportunities of free passage within the ] offered by the ]. It was reportedly first introduced to Europe at the trading city of ] in the ] in 1347. After a protracted siege, during which the Mongol army under ] was suffering the disease, they catapulted the infected corpses over the ] to infect the inhabitants. The ] traders fled, taking the plague by ship into ] and the south of Europe, when it spread.<ref>{{cite web |url=http://web.archive.org/web/20080625094232/http://www.channel4.com/history/microsites/H/history/a-b/blackdeath.html |title=Channel 4{{–}} History{{–}} The Black Death |publisher=Channel4.com |date= |accessdate=2008-11-03}}</ref> Whether or not this hypothesis is accurate, it is clear that several pre-existing conditions such as war, famine, and weather contributed to the severity of the Black Death. In China, the 13th century ] disrupted farming and trading, and led to widespread famine. The population dropped from approximately 120 to 60&nbsp;million.<ref>Ping-ti Ho, "An Estimate of the Total Population of Sung-Chin China", in ''Études Song'', Series 1, No 1, (1970) pp. 33–53.</ref> The 14th-century plague is estimated to have killed one third of the population of China.<ref>{{cite web |accessdate=2008-11-03 |url=http://chip.med.nyu.edu/course/view.php?id=13&topic=1 |title=Plague |publisher=Center for Health Information Preparedness}}</ref>
The importance of ] was not recognized until the 19th century and the ]. Until then streets were usually unhygienic, with live animals and human parasites facilitating the spread of ].<ref>{{Cite journal|date=2019-11-14|title=Erratum to: The Path to Pistoia: Urban Hygiene Before the Black Death|journal=Past & Present|issue=251|pages=e2|doi=10.1093/pastj/gtz060|issn=0031-2746|doi-access=free}}</ref>


By the early 14th century, so much filth had collected inside urban Europe that French and Italian cities were naming streets after human waste. In medieval Paris, several street names were inspired by merde, the French word for "shit". There were rue Merdeux, rue Merdelet, rue Merdusson, rue des Merdons and rue Merdiere—as well as a rue du Pipi.{{sfn|Kelly|2006|pp=16-17}} Pigs, cattle, chickens, geese, goats and horses roamed the streets of medieval London and Paris.
In Europe, the ] ended sometime towards the end of the 13th century, bringing the "]"<ref>World Regions in Global Context Third Edition</ref> and harsher winters with reduced harvests. In the years 1315 to 1317 a catastrophic ], known as the ], struck much of ]. It has been argued that the famine came about as the result of a large population growth in the previous centuries, with the result that, in the early 14th century the population began to exceed the number that could be sustained by productive capacity of the land and farmers.<ref name="Bennet&Hollister2006"/>


Medieval homeowners were supposed to police their housefronts, including removing animal dung, but most urbanites were careless. William E. Cosner, a resident of the London suburb of Farringdon Without, received a complaint alleging that "men could not pass for the stink . . . horse dung and horse piss." One irate Londoner complained that the runoff from the local slaughterhouse had made his garden "stinking and putrid", while another charged that the blood from slain animals flooded nearby streets and lanes, "making a foul corruption and abominable sight to all dwelling near." In much of medieval Europe, sanitation legislation consisted of an ordinance requiring homeowners to shout, "Look out below!" three times before dumping a full chamber pot into the street.{{sfn|Kelly|2006|pp=16-17, 68}}
In Northern Europe, new technological innovations such as the heavy ] and the ] were not as effective in clearing new fields for harvest as they were in the ] because the north had poor, clay-like, soil.<ref name=Bennet&Hollister2006/> Food shortages and rapidly inflating prices were a fact of life for as much as a century before the plague. Wheat, oats, hay and consequently livestock, were all in short supply. Their scarcity resulted in ], which increases susceptibility to infections due to weakened immunity.


Early Christians considered bathing a temptation. With this danger in mind, ] declared, "To those who are well, and especially to the young, bathing shall seldom be permitted." ] took the injunction to heart and died without ever bathing.{{sfn|Kelly|2006|pp=71-72}}
]


====Territorial origins====
The European economy entered a ] in which hunger and chronic, low-level debilitating disease reduced the productivity of labourers, and so the grain output was reduced, causing grain prices to increase. This situation was worsened when landowners and monarchs such as ] (r. 1327–1377) and ] (r. 1328–1350), out of a fear that their comparatively high ] would decline, raised the fines and rents of their tenants.<ref name=Bennet&Hollister2006/> Standards of living then fell drastically, diets grew more limited, and Europeans as a whole experienced more health problems.
According to a team of ]s led by ], ''Yersinia pestis'' "evolved in or near China" over 2,600 years ago.<ref>{{cite web |url=https://www.medicalnewstoday.com/articles/206309#1 |title=Origins Of The Black Death Traced Back To China, Gene Sequencing Has Revealed |work=Medicalnewstoday.com | vauthors = Nordqvist C |date=1 November 2010 |access-date=13 December 2021 |url-status=live |archive-url=https://web.archive.org/web/20220717060853/https://www.medicalnewstoday.com/articles/206309 |archive-date=17 July 2022}}</ref><ref>{{cite news| vauthors = Wade N |url=https://www.nytimes.com/2010/11/01/health/01plague.html|title=Europe's Plagues Came From China, Study Finds|date=31 October 2010|work=]|access-date=25 March 2020|url-status=live|archive-url=https://web.archive.org/web/20101104083917/http://www.nytimes.com/2010/11/01/health/01plague.html|archive-date=4 November 2010|quote=The great waves of plague that twice devastated Europe and changed the course of history had their origins in China, a team of medical geneticists reported Sunday, as did a third plague outbreak that struck less harmfully in the 19th century.&nbsp;... In the issue of '']'' published online Sunday, they conclude that all three of the great waves of plague originated from China, where the root of their tree is situated.&nbsp;... The likely origin of the plague in China has nothing to do with its people or crowded cities, Dr. Achtman said. The bacterium has no interest in people, whom it slaughters by accident. Its natural hosts are various species of rodent such as marmots and voles, which are found throughout China.|author-link=Nicholas Wade}}</ref>{{sfn|Morelli|Song|Mazzoni|Eppinger|2010}} Later research by a team led by Galina Eroshenko placed its origins more specifically in the ] mountains on the border between ] and China.<ref name="pmid29073248">{{cite journal | vauthors = Eroshenko GA, Nosov NY, Krasnov YM, Oglodin YG, Kukleva LM, Guseva NP, Kuznetsov AA, Abdikarimov ST, Dzhaparova AK, Kutyrev VV | display-authors = 6 | title = Yersinia pestis strains of ancient phylogenetic branch 0.ANT are widely spread in the high-mountain plague foci of Kyrgyzstan | journal = PLOS ONE | volume = 12 | issue = 10 | pages = e0187230 | date = 2017 | pmid = 29073248 | pmc = 5658180 | doi = 10.1371/journal.pone.0187230 | bibcode = 2017PLoSO..1287230E | doi-access = free }}</ref>{{sfn|Slavin|2019}} However more recent research notes that the previous sampling contained East Asian bias and that sampling since then has discovered strains of ''Y. pestis'' in the Caucasus region previously thought to be restricted to China.<ref name = "spyrou">{{cite journal | vauthors = Spyrou MA, Tukhbatova RI, Feldman M, Drath J, Kacki S, Beltrán de Heredia J, Arnold S, Sitdikov AG, Castex D, Wahl J, Gazimzyanov IR, Nurgaliev DK, Herbig A, Bos KI, Krause J | display-authors = 6 | title = Historical Y. pestis Genomes Reveal the European Black Death as the Source of Ancient and Modern Plague Pandemics | journal = Cell Host & Microbe | volume = 19 | issue = 6 | pages = 874–881 | date = June 2016 | pmid = 27281573 | doi = 10.1016/j.chom.2016.05.012 | doi-access = free }}</ref> There is also no physical or specific textual evidence of the Black Death in 14th century China. As a result, China's place in the sequence of the plague's spread is still debated to this day.<ref name="telegraph china">{{Cite news |url=https://www.telegraph.co.uk/news/worldnews/asia/china/8102278/Black-Death-may-have-originated-in-China.html |title=Black Death may have originated in China |journal=The Daily Telegraph |date=1 November 2010 | vauthors = Moore M |access-date=2 April 2018 |archive-url=https://web.archive.org/web/20171018235115/http://www.telegraph.co.uk/news/worldnews/asia/china/8102278/Black-Death-may-have-originated-in-China.html |archive-date=18 October 2017 |url-status=live }}</ref> According to Charles Creighton, records of epidemics in 14th-century China suggest nothing more than typhus and major Chinese outbreaks of epidemic disease post-date the European epidemic by several years.<ref>{{cite book | vauthors = Creighton C |title=A History of Epidemics in Britain |location=Cambridge |publisher=At the University Press |date=1891 |page=153}}</ref> The earliest Chinese descriptions of the bubonic plague do not appear until the 1640s.{{sfn|Sussman|2011}}


] gravesites dating from 1338 to 1339 near ] have inscriptions referring to plague, which has led some historians and ]s to think they mark the outbreak of the ]; this is supported by recent direct findings of ''Y. pestis'' DNA in teeth samples from graves in the area with inscriptions referring to "pestilence" as the cause of death.<ref name="Spyrou 1–7"/> Epidemics killed an estimated 25&nbsp;million across Asia during the fifteen&nbsp;years before the Black Death reached ] in 1347.<ref>{{Cite book |url=https://books.google.com/books?id=tzRwRmb09rgC&pg=PA31 |title=Encyclopedia of plague and pestilence: from ancient times to the present |vauthors=Kohn GC |publisher=Infobase Publishing |year=2008 |isbn=978-0-8160-6935-4 |page=31 |access-date=16 October 2015 |archive-url=https://web.archive.org/web/20190331195953/https://books.google.com/books?id=tzRwRmb09rgC&pg=PA31 |archive-date=31 March 2019 |url-status=live}}</ref><ref>{{harvnb|Hecker|1859|p=21}} cited by Ziegler, p. 15.</ref>
In the autumn of 1314, heavy rains began to fall, which were the start of several years of cold and wet winters. The already weak harvests of the north suffered and the seven-year famine ensued. The Great Famine was arguably the worst in European history, perhaps reducing the population by more than 10%.<ref name=Bennet&Hollister2006/> Records recreated from ] studies show a hiatus in building construction during the period, as well as a deterioration in climate.<ref>{{cite book |title=A Slice Through Time |first=Mike |last=Baillie |page=124 |year=1997 |isbn=978–0713476545}}</ref>


{{blockquote|The evidence does not suggest, at least at present, that these mortality crises were caused by plague. Although some scholars, including McNeill and Cao, see the 1333 outbreak as a prelude to the outbreaks in Europe from the late 1340s to the early 1350s, scholars of the Yuan and Ming periods remain skeptical about such an interpretation. Nonetheless, the remarkably high mortality rates during the Datong mortality should discourage us from rejecting the possibility of localized/regional outbreaks of plague in different parts of China, albeit differing in scale from, and unrelated to, the pandemic mortality of the Black Death. What we lack is any indication of a plague pandemic that engulfed vast territories of the Yuan Empire and later moved into western Eurasia through Central Asia.{{sfn|Slavin|2019}}|Philip Slavin}}
This was the economic and social situation in which the predictor of the coming disaster, a ] (contaminated water) epidemic, emerged. Many thousands died in populated urban centres, most significantly ] (now in Belgium). In 1318 a ] of unknown origin, sometimes identified as ], targeted the animals of Europe, notably sheep and cattle, further reducing the food supply and income of the peasantry.


According to John Norris, evidence from Issyk-Kul indicates a small sporadic outbreak characteristic of transmission from rodents to humans with no wide-scale impact.{{sfn|Sussman|2011}} According to Achtman, the dating of the plague suggests that it was not carried along the ], and its widespread appearance in that region probably postdates the European outbreak.<ref name="telegraph china" /> Additionally, the Silk Road had already been heavily disrupted before the spread of the Black Death; Western and Middle Eastern traders found it difficult to trade on the Silk Road by 1325 and impossible by 1340, making its role in the spread of plague less likely.{{sfn|Sussman|2011}} There are no records of the symptoms of the Black Death from Mongol sources or writings from travelers east of the ] prior to the Crimean outbreak in 1346.{{sfn|Sussman|2011|p=328}}
==Causes==
{{Main|Causes of the Black Death}}


Others still favor an origin in China.{{sfn|Slavin|2019}} The theory of Chinese origin implicates the Silk Road, the disease possibly spreading alongside ] armies and traders, or possibly arriving via ship—however, this theory is still contested. It is speculated that rats aboard ]'s ships in the 15th century may have carried the plague to ], ], and Africa.<ref name="telegraph china" />
===Epidemiology===
]'' seen at 200x magnification. This bacterium, carried and spread by fleas, is generally thought to have been the cause of millions of deaths.<ref>{{cite web |url=http://web.archive.org/web/20080516012329/http://www.avma.org/public_health/biosecurity/plague_bgnd.asp |title=Plague Backgrounder |publisher=Avma.org |date= |accessdate=2008-11-03}}</ref>]]
Several possible causes have been advanced for the Black Death. The most prevalent explanation is the ] theory, which attributes the outbreak to the pathogen responsible for an epidemic that began in southern China in 1865, eventually spreading to India. The identification was tentatively made by the historian ] in 1893. The investigation of the pathogen that caused the 19th-century plague was begun by teams of scientists who visited Hong Kong in 1894, among whom was ], after whom the pathogen was named ''Yersinia pestis''.<ref name=Chritakos2005>G. Christakos, ''Interdisciplinary Public Health Reasoning and Epidemic Modelling: the Case of Black Death'' (シュプリンガー・ジャパン株式会社, 2005), ISBN 3540257942, pp. 110-14.</ref> The mechanism by which ''Y. pestis'' was transmitted was established over the next decade and was found to involve the bites of fleas whose ]s had become obstructed by replicating ''Y. pestis'' several days after feeding on an infected host. This blockage results in starvation and aggressive feeding behaviour by the fleas, which repeatedly attempt to clear their blockage by ], resulting in thousands of plague bacteria being flushed into the feeding site, infecting the host. The bubonic plague mechanism was also dependent on two populations of rodents—one resistant to the disease, who act as hosts, keeping the disease endemic, and a second who lack resistance. When the second population die, the fleas move on to other hosts, including people, thus creating a human epidemic.<ref name=Chritakos2005/> By the second edition of his work in 1908, Gasquet was able to adopt the epidemiology of the bubonic plague for the Black Death, implicating rats and fleas in the process, and his interpretation was widely accepted for other ancient and medieval epidemics, such as the ] that was prevalent in the Roman Empire from 541 to 700 AD.<ref name=Chritakos2005/>


Research on the ] and the ] shows no evidence of any serious epidemic in fourteenth-century India and no specific evidence of plague in 14th-century China, suggesting that the Black Death may not have reached these regions.{{sfn|Sussman|2011}}<ref name="telegraph china"/>{{sfn|Benedictow|2004|pp=48–49}} Ole Benedictow argues that since the first clear reports of the Black Death come from ], the Black Death most likely originated in the nearby plague focus on the northwestern shore of the ].{{sfn|Benedictow|2004|pp=50–51}}
This interpretation was first significantly challenged by the work of British bacteriologist J. F. D. Shrewsbury in 1970, who noted that the reported rates of mortality in rural areas during the 14th century pandemic were inconsistent with the modern bubonic plague, leading him to conclude that contemporary accounts were exaggerations.<ref name=Chritakos2005/> In 1984 zoologist Graham Twigg produced the first major work to directly challenge the bubonic plague theory, and his doubts about the identity of the Black Death have been taken up by a number of authors, including Samuel K. Cohn, Jr. (2002), ] (1997), and Susan Scott and Christopher Duncan (2001).<ref name=Chritakos2005/> Supporters of the bubonic plague theory point to the similarity of symptoms, the existence of an established population of ]s (''Rattus rattus'') in Europe before the 14th century, the facilitation of the propagation of the disease through the transport of flea-infested goods such as wheat and the discovery of ''Y. pestis'' D.N.A. in the teeth of bodies from the period in southern French cities.<ref name=Chritakos2005/> In addition to arguing that the rat population was insufficient to account to allow a bubonic plague pandemic, sceptics of the bubonic plague theory point out that the symptoms of the Black Death are not unique (and arguably in some accounts may differ from bubonic plague); that transference via fleas in goods was likely to be of marginal significance and that the DNA testing may be flawed and have not been repeated elsewhere, despite extensive samples from other mass graves.<ref name=Chritakos2005/> Other arguments include: the lack of accounts of the death of rats before outbreaks of plague between the 14th and 17th centuries; temperatures that are too cold in Northern Europe for the survival of fleas (particularly in Iceland, which endured two outbreaks despite a lack of rodents); that, despite primitive transport systems; the spread of the Black Death was much faster than modern Bubonic plague; that mortality rates of the Black Death appear to be very high; that, while modern bubonic plague is largely endemic as a rural disease, the Black Death indiscriminately struck urban and rural areas; that the pattern of the Black Death, with major outbreaks in the same areas separated by between 5 and 15 years, differs from modern Bubonic plague, which often becomes endemic for decades, flaring up on an annual basis.<ref name=Chritakos2005/>


{{blockquote|Demographic historians estimate that China's population fell by at least 15 per cent, and perhaps as much as a third, between 1340 and 1370. This population loss coincided with the Black Death that ravaged Europe and much of the Islamic world in 1347–52. However, there is a conspicuous lack of evidence for pandemic disease on the scale of the Black Death in China at this time. War and famine – and the diseases that typically accompanied them – probably were the main causes of mortality in the final decades of Mongol rule.{{sfn|von Glahn|2016|p=440}}|Richard von Glahn}}
]
A variety of alternatives to the ''Y. pestis'' have been put forward. Twigg suggested that the cause was a form of ] and ] (2001) thought it may have been a combination of anthrax and other pandemics. Scott and Duncan have argued that the pandemic was a form of infectious disease that characterise as ''hemorrhagic'' plague similar to ]. However, no single alternative solution has achieved widespread acceptance.<ref name=Chritakos2005/> Many scholars arguing for the ''Y. pestis'' as the major agent of the pandemic, suggest that its extent and symptoms can be explained by a combination of bubonic plague with other diseases, including ], ] and respiratory infections. In addition to the bubonic infection, others point to additional septicemic (a type of "blood poisoning") and pneumonic (an airborne plague that attacks the lungs before the rest of the body) forms of the plague, which lengthen the duration of outbreaks throughout the seasons and help account for its high mortality rate and additional recorded symptoms.<ref name=Byrne2004pp21-9>J. P. Byrne, ''The Black Death'' (London: Greenwood Publishing Group, 2004), ISBN 0313324921, pp. 21-9.</ref>


Monica Green suggests that other parts of ] outside the west do not contain the same evidence of the Black Death, because there were actually four strains of ''Yersinia pestis'' that became predominant in different parts of the world. Mongol records of illness such as food poisoning may have been referring to the Black Death.{{sfn|Green|2020}} Another theory is that the plague originated near Europe and cycled through the Mediterranean, Northern Europe and Russia before making its way to China.<ref name="spyrou" /> Other historians, such as John Norris and Ole Benedictaw, believe the plague likely originated in Europe or the Middle East, and never reached China.{{sfn|Sussman|2011|p=354}} Norris specifically argues for an origin in Kurdistan rather than Central Asia.{{sfn|Sussman|2011|p=328}}
However, in October 2010 the open-access scientific journal '''' published a paper by a multinational team who undertook a new investigation into the role of ''Yersinia pestis'' in the Black Death. Their surveys tested for DNA and protein signatures specific for ''Y. pestis'' in human skeletons from widely distributed mass graves in northern, central and southern Europe that were associated archaeologically with the Black Death and subsequent resurgences. The authors concluded that this new research, together with prior analyses from the south of France and Germany


====European outbreak====
:"...ends the debate about the etiology of the Black Death, and unambiguously demonstrates that ''Y. pestis'' was the causative agent of the epidemic plague that devastated Europe during the Middle Ages."
{{quote box
|align = right
|width = 25em
|quote = The seventh year after it began, it came to England and first began in the towns and ports joining on the seacoasts, in ], where, as in other counties, it made the country quite void of inhabitants so that there were almost none left alive.
... But at length it came to ], yea even to ] and to London, and finally it spread over all England and so wasted the people that scarce the tenth person of any sort was left alive.
|source = ], ''Chronicon Angliae''<ref>{{cite book|title=Galfridi Le Baker de Swinbroke, Chronicon Angliae temporibus Edwardi II et Edwardi III| vauthors = Baker G | veditors = Gilles AJ |url= https://archive.org/details/galfridilebaker00gilegoog|archive-url=https://archive.org/details/galfridilebaker00gilegoog/page/n27|archive-date=3 August 2008| location=Londini|publisher=apud Jacobum Bohn| year=1847|orig-year=1350| lccn = 08014593 | ol =6996785M| via=]|language=la, en}}</ref>
}}


Plague was reportedly first introduced to Europe via ] traders from their port city of ] in the ] in 1347. During a ] of the city in 1345–1346, the Mongol ] army of ]—whose mainly ] troops were suffering from the disease—]s over the city walls of Kaffa to infect the inhabitants,{{sfn|Wheelis|2002}} though it is also likely that infected rats travelled across the siege lines to spread the epidemic to the inhabitants.{{sfn|Barras|Greub|2014|ps= "In the Middle Ages, a famous although controversial example is offered by the ] (now Feodossia in Ukraine/Crimea), a Genovese outpost on the Black Sea coast, by the Mongols. In 1346, the attacking army experienced an epidemic of bubonic plague. The Italian chronicler Gabriele de' Mussi, in his ''Istoria de Morbo sive Mortalitate quae fuit Anno Domini 1348'', describes quite plausibly how plague was transmitted by the Mongols by throwing diseased cadavers with catapults into the besieged city, and how ships transporting Genovese soldiers, fleas and rats fleeing from there brought it to the Mediterranean ports. Given the highly complex epidemiology of plague, this interpretation of the Black Death (which might have killed >25 million people in the following years throughout Europe) as stemming from a specific and localized origin of the Black Death remains controversial. Similarly, it remains doubtful whether the effect of throwing infected cadavers could have been the sole cause of the outburst of an epidemic in the besieged city."}}<ref>{{Cite book| vauthors = Byrne JP |url=https://books.google.com/books?id=5KtDfvlSrDAC|title=Encyclopedia of the Black Death|publisher=ABC-CLIO|year=2012|isbn=978-1-59884-253-1|location=Santa Barbara, California|pages=65|language=en|chapter=Caffa (Kaffa, Fyodosia), Ukraine|access-date=8 May 2020|archive-date=4 June 2020|archive-url=https://web.archive.org/web/20200604122924/https://books.google.com/books?id=5KtDfvlSrDAC|url-status=live}}</ref> As the disease took hold, Genoese traders fled across the ] to ], where the disease first arrived in Europe in summer 1347.<ref name=":5">{{Cite book| vauthors = Byrne JP |title=Encyclopedia of the Black Death|publisher=ABC-CLIO|year=2012|isbn=978-1-59884-254-8|location=Santa Barbara, California.|pages=87|chapter=Constantinople/Istanbul|oclc=769344478}}</ref>
The study also found that there were two previously unknown but related ] (genetic branches) of the ''Y. pestis'' genome associated with different medieval mass graves. These clades (which are now thought to be extinct) were found to be ancestral to modern isolates of the modern ''Y. pestis'' strains Orientalis and Medievalis, suggesting that the plague may have entered Europe in two distinct waves. Surveys of plague pit remains in France and England indicate that the first variant entered Europe through the port of ] around November 1347 and spread through France over the next two years, eventually reaching England in the spring of 1349, where it spread through the country in three successive epidemics. However, surveys of plague pit remains from the Netherlands town of ] showed that the ''Y. pestis'' genotype responsible for the pandemic that spread through the Low Countries from 1350 differed from that found in Britain and France, implying that Bergen op Zoom (and possibly other parts of the southern Netherlands) was not directly infected from England or France in AD 1349, and suggesting that a second wave of plague infection, distinct from those in Britain and France, may have been carried to the Low Countries from Norway, the ] cities, or another site<ref></ref>.


The epidemic there killed the 13-year-old son of the ], ], who wrote a description of the disease modelled on ]'s account of the 5th century BCE ], noting the spread of the Black Death by ship between maritime cities.<ref name=":5" /> ], while writing to ], described the rising death toll, the futility of medicine, and the panic of the citizens.<ref name=":5" /> The first outbreak in Constantinople lasted a year, but the disease recurred ten times before 1400.<ref name=":5" />
===Malthusian crisis===
Some historians have suggested another theory for the cause of the Black Death, one that points to social, agricultural and economic causes. Often known as the ], scholars use this term to express and explain tragedies throughout history. In his 1798 ''Essay on the Principle of Population'', ] asserted that eventually humans would reproduce so greatly that they would go beyond the limits of food supplies; once they reached this point, some sort of "reckoning" was inevitable. In his book, ''The Black Death and the Transformation of the West'', professor ] explores this idea of plague as an inevitable crisis wrought on humanity in order to control the population and human resources. In the book ''The Black Death; A Turning Point in History?'' (ed. William M. Bowsky) he writes "implies that the Black Death's pivotal role in ] society ... was now being challenged. Arguing on the basis of a neo-Malthusian economics, ] recast the Black Death as a necessary and long overdue corrective to an overpopulated Europe."


Carried by twelve Genoese galleys, plague arrived by ship in ] in October 1347;<ref>Michael of Piazza (Platiensis) ''Bibliotheca scriptorum qui res in Sicilia gestas retulere'' Vol 1, p. 562, cited in Ziegler, 1998, p. 40.</ref> the disease spread rapidly all over the island. Galleys from Kaffa reached Genoa and Venice in January 1348, but it was the outbreak in ] a few weeks later that was the entry point into northern Italy. Towards the end of January, one of the galleys expelled from Italy arrived in ]s.<ref>De Smet, Vol II, ''Breve Chronicon'', p. 15.</ref>
Herlihy also examined the arguments against the Malthusian crisis, stating "if the Black Death was a response to excessive human numbers it should have arrived several decades earlier"<ref name=Herlihy>
{{cite book
| last=Herlihy
| first=David
| title=The black death and the transformation of the west
| page=33
| url=http://www.hup.harvard.edu/catalog/HERBLA.html
| year=1997
| accessdate=2 September 2009
| publisher=Harvard University Press
| isbn=978-0-674-07612-9
}}
</ref> due to the population growth of years before the outbreak of the Black Death. Herlihy also brings up other, biological factors that argue against the plague as a "reckoning" by arguing "the role of famines in affecting population movements is also problematic. The many famines preceding the Black Death, even the ], did not result in any appreciable reduction in population levels".<ref name=Herlihy /> Herlihy concludes the matter stating, "the medieval experience shows us not a Malthusian crisis but a stalemate, in the sense that the community was maintaining at stable levels very large numbers over a lengthy period" and states that the phenomenon should be referred to as more of a deadlock, rather than a crisis, to describe Europe before the epidemics.<ref name=Herlihy />{{rp|34}}


], the disease spread northwest across Europe, ], ], Portugal, and ] by June 1348, then spreading east and north ], Scotland and Scandinavia from 1348 to 1350. It was introduced ] in 1349 when a ship landed at ], then spread to Bjørgvin (modern ]).{{sfn|Karlsson|2000|page=111}} Finally, it ] in 1352 and reached ] in 1353.<ref>{{cite book |last1=Byrne |first1=Joseph P. |title=Encyclopedia of the Black Death |date=16 January 2012 |publisher=Bloomsbury Publishing USA |isbn=978-1-59884-254-8 |page=245 |url=https://books.google.com/books?id=FkzEEAAAQBAJ |language=en}}</ref><ref name="Belich">{{cite book |last1=Belich |first1=James |title=The World the Plague Made: The Black Death and the Rise of Europe |date=25 June 2024 |publisher=Princeton University Press |isbn=978-0-691-21916-5 |page=42 |url=https://books.google.com/books?id=P3frEAAAQBAJ |language=en |quote=Northern Russia was hit in 1352, beginning in towns close to the Baltic, Novgorod, and Pskov, and reaching Moscow in 1353.}}</ref> Plague was less common in parts of Europe with less-established trade relations, including the majority of the ], isolated parts of Belgium and ], and isolated Alpine villages throughout the continent.{{sfn|Zuchora-Walske|2013}}{{sfn|Welford|Bossak|2010}}<ref>{{cite journal | vauthors = Curtis DR, Roosen J | title = The sex-selective impact of the Black Death and recurring plagues in the Southern Netherlands, 1349-1450 | journal = American Journal of Physical Anthropology | volume = 164 | issue = 2 | pages = 246–259 | date = October 2017 | pmid = 28617987 | pmc = 6667914 | doi = 10.1002/ajpa.23266 }}</ref>
==Symptoms==
]
Contemporary accounts of the plague are often varied or imprecise. The most commonly noted symptom was the appearance of ]es in the groin, the neck and armpits, which oozed pus and bled when opened.<ref name=Byrne2004pp21-9/> This was followed by acute fever and vomiting of blood. Some accounts, like that of Louis Heyligen, a priest living in Avignon, noted a distinct form of the disease which infected the lungs and led to respiratory problems.<ref name=Byrne2004pp21-9/> Most victims died within two to seven days after infection. David Herlihy identifies another potential sign of the plague: freckle-like spots and rashes.<ref>D. Herlihy, ''The Black Death and the Transformation of the West'' (Harvard University Press: Cambridge, Massachusetts, 1997) p. 29.</ref>


According to some epidemiologists, periods of unfavorable weather decimated plague-infected rodent populations, forcing their fleas onto alternative hosts,{{sfn|Samia|Kausrud|Heesterbeek|Ageyev|2011}} inducing plague outbreaks which often peaked in the hot summers of the Mediterranean{{sfn|Cohn|2008}} and during the cool autumn months of the southern ].<ref>{{Dead link|date=October 2023 |bot=InternetArchiveBot |fix-attempted=yes }}, Kersten Krüger (2004). LIT Verlag Berlin. {{ISBN|3-8258-8778-2}}</ref>{{efn|However, other researchers do not think that plague ever became endemic in Europe or its rat population. The disease repeatedly wiped out the rodent carriers, so that the fleas died out until a new outbreak from Central Asia repeated the process. The outbreaks have been shown to occur roughly 15 years after a warmer and wetter period in areas where plague is endemic in other species, such as ]s.<ref>{{cite magazine|title=Bubonic plague was a serial visitor in European Middle Ages|url=https://www.sciencenews.org/article/bubonic-plague-was-serial-visitor-european-middle-ages|last= Baggaley |first=Kate |date=24 February 2015|magazine=Science News|access-date=24 February 2015|archive-url=https://web.archive.org/web/20150224160907/https://www.sciencenews.org/article/bubonic-plague-was-serial-visitor-european-middle-ages|archive-date=24 February 2015|url-status=live}}</ref>{{sfn|Schmid|Büntgen|Easterday|Ginzler|2015}}}} Among many other culprits of plague contagiousness, pre-existing malnutrition weakened the immune response, contributing to an immense decline in European population.<ref name="Baten">{{Cite journal|vauthors=Baten J, Koepke N|date=2005|title=The Biological Standard of Living in Europe during the Last Two Millennia|url=https://academic.oup.com/ereh/issue.|journal=European Review of Economic History|volume=9|issue=1|pages=61–95|via=EBSCO|doi=10.1017/S1361491604001388|hdl=10419/47594|hdl-access=free|access-date=4 February 2020|archive-date=13 December 2021|archive-url=https://web.archive.org/web/20211213222853/https://academic.oup.com/ereh/issue.|url-status=live}}</ref>
The modern ] has a ] of thirty to seventy-five percent and symptoms including ] of 38–41 °] (101–105 ]), ]s, painful aching joints, ] and ], and a general feeling of ]. If untreated, of those that contract the bubonic plague, 4 out of 5 die within eight days.<ref>R. Totaro, ''Suffering in Paradise: The Bubonic Plague in English Literature from More to Milton'' (Pittsburgh: Duquesne University Press, 2005), p. 26.</ref> ] has ] of ninety to ninety-five percent. Symptoms include fever, cough, and blood-tinged ]. As the disease progresses, sputum becomes free flowing and bright red. ] is the least common of the three forms, with a ] close to one hundred percent. Symptoms are high fevers and purple skin patches (] due to ]). In cases of pneumonic and particularly septicemic plague the progress of the disease is so rapid that there would often be no time for the development of the enlarged lymph nodes that were noted as buboes.<ref>J. P. Byrne, ''The Black Death'' (London: Greenwood Publishing Group, 2004), ISBN 0313324921, p. 8.</ref>


====West Asian and North African outbreak====
Anthrax can enter the human body through the skin (cutaneous), intestines (ingestion), or lungs (inhalation), and causes distinct clinical symptoms based on its site of entry.
The disease struck various regions in the Middle East and North Africa during the ], leading to serious depopulation and permanent change in both economic and social structures.{{sfn|Green|2018}}
Cutaneous anthrax infection in humans shows up as a boil-like skin lesion that eventually forms an ulcer with a black center (eschar), often beginning as an irritating and itchy skin lesion or blister that is dark and usually concentrated as a black dot. Cutaneous infections generally form within the site of spore penetration between 2 and 5 days after exposure. Without treatment about 20% of cutaneous skin infection cases progress to ] and death.<ref name="CDC-Anthrax" /> Respiratory infection in humans initially presents with cold or ] for several days, followed by severe (and often fatal) respiratory collapse. Historical mortality was 92%.<ref name="bravata">Bravata DM, Holty JE, Liu H, McDonald KM, Olshen RA, Owens DK (2006), Systematic review: a century of inhalational anthrax cases from 1900 to 2005, Annals of Internal Medicine; 144(4): 270–80.</ref> Gastrointestinal infection in humans is most often caused by eating anthrax-infected meat and is characterized by serious gastrointestinal difficulty, ] of blood, severe diarrhea, acute inflammation of the intestinal tract, and loss of appetite. After the bacteria invades the bowel system, it spreads through the bloodstream throughout the body, making more toxins on the way.<ref name="CDC-Anthrax">{{cite web |title=Anthrax Q & A: Signs and Symptoms |work=Emergency Preparedness and Response |publisher=Centers for Disease Control and Prevention |year=2003 |url=http://www.bt.cdc.gov/agent/anthrax/faq/signs.asp |accessdate=2007-04-19 }}</ref>


By autumn 1347, plague had reached ] in Egypt, transmitted by sea from ] via a single merchant ship carrying slaves.<ref name=":6">{{Cite book| vauthors = Byrne JP |url=https://books.google.com/books?id=5KtDfvlSrDAC|title=Encyclopedia of the Black Death|publisher=ABC-CLIO|year=2012|isbn=978-1-59884-253-1|location=Santa Barbara, California|pages=51|language=en|access-date=8 May 2020|archive-date=4 June 2020|archive-url=https://web.archive.org/web/20200604122924/https://books.google.com/books?id=5KtDfvlSrDAC|url-status=live}}</ref> By late summer 1348, it reached ], capital of the ], cultural center of the ], and the largest city in the ]; the ] child sultan ] fled and more than a third of the 600,000 residents died.<ref name=":7">{{Cite book| vauthors = Byrne JP |title=Encyclopedia of the Black Death|publisher=ABC-CLIO|year=2012|isbn=978-1-59884-254-8|location=Santa Barbara, California|pages=65–66|chapter=Cairo, Egypt|oclc=769344478}}</ref> The ] was choked with corpses despite Cairo having a medieval hospital, the late 13th-century ] of the ].<ref name=":7" /> The historian ] described the abundant work for grave-diggers and practitioners of ]s; plague recurred in Cairo more than fifty times over the following one and a half centuries.<ref name=":7" />
==Consequences==

{{anchor|plague-in-palestine}}{{anchor|plague-in-syria}}
During 1347, the disease travelled eastward to ] by April; by July it had reached ], and in October plague had broken out in ].<ref name=":6" /> That year, in ] of modern ], ], ], and ], the cities of ], ], ], ], and ] were all infected. In 1348–1349, the disease reached ]. The city's residents fled to the north, but most of them ended up dying during the journey.<ref>{{cite web|url=https://www.thegreatcourses.com/courses/an-economic-history-of-the-world-since-1400.html|title=An Economic History of the World since 1400|website=English|access-date=23 May 2018|archive-url=https://web.archive.org/web/20180725223220/https://www.thegreatcourses.com/courses/an-economic-history-of-the-world-since-1400.html|archive-date=25 July 2018|url-status=live}}</ref> Within two years, the plague had spread throughout the Islamic world, from Arabia across North Africa.{{sfn|Kelly|2006}}{{page needed|date=May 2021}}

The pandemic spread westwards from Alexandria along the African coast, while in April 1348 ] was infected by ship from Sicily. Tunis was then under attack by an army from Morocco; this army dispersed in 1348 and brought the contagion with them to Morocco, whose epidemic may also have been seeded from the Islamic city of ] in ].<ref name=":6" />

] became infected in 1348 by pilgrims performing the ].<ref name=":6" /> In 1351 or 1352, the ] sultan of the ], al-Mujahid Ali, was released from Mamluk captivity in Egypt and carried plague with him on his return home.<ref name=":6" /><ref>{{Cite book| vauthors = Sadek N |chapter-url=https://books.google.com/books?id=P-pGDwAAQBAJ&pg=PT956|title=Medieval Islamic Civilization: An Encyclopedia – Volume II: L–Z|publisher=Routledge|year=2006|isbn=978-1-351-66813-2| veditors = Meri J |language=en|chapter=Rasulids|access-date=8 May 2020|archive-date=27 July 2020|archive-url=https://web.archive.org/web/20200727114216/https://books.google.com/books?id=P-pGDwAAQBAJ&pg=PT956|url-status=live}}</ref> During 1349, records show the city of ] suffered a massive epidemic, and the city of ] experienced a second round of the disease.<ref>{{Citation |title=The Black Death and the Rise of the Ottomans |date=2014 |work=Natural Disasters in the Ottoman Empire: Plague, Famine, and Other Misfortunes |pages=21–60 |editor-last=Ayalon |editor-first=Yaron |url=https://www.cambridge.org/core/books/natural-disasters-in-the-ottoman-empire/black-death-and-the-rise-of-the-ottomans/D83E412C0BB3C092E79683722AFFFC33 |access-date=2024-03-02 |place=Cambridge |publisher=Cambridge University Press |doi=10.1017/CBO9781139680943.004 |isbn=978-1-107-07297-8}}</ref>

===Signs and symptoms===
] ] of the ]s due to ] causes the skin and ] to ] and turn black]]
] on the upper thigh of a person infected with bubonic plague. Swollen ]s (''buboes'') often occur in the neck, armpit and groin (''inguinal'') regions of plague victims.]]

====Bubonic plague====
Symptoms of the plague include fever of {{convert|38|–|41|°C|°F}}, headaches, ]s, ] and vomiting, and a general feeling of ]. Left untreated, 80% of victims die within eight days.<ref>R. Totaro ''Suffering in Paradise: The Bubonic Plague in English Literature from More to Milton'' (Pittsburgh: Duquesne University Press, 2005), p. 26</ref>

Contemporary accounts of the pandemic are varied and often imprecise.{{efn|In Britain "the special symptoms characteristic of the plague of 1348–9 were four in number:— (1) Gangrenous inflammation of the throat and lungs; (2) Violent pains in the region of the chest; (3) The vomiting and spitting of blood; and (4) The pestilential odour coming from the bodies and breath of the sick."<ref name=gasquet>{{cite book |last1=Gasquet |first1=Francis Aidan |title=The Great Pestilence (A.D. 1348-9), Now Commonly Known as the Black Death |date=29 May 2014 |url=https://www.gutenberg.org/ebooks/45815 |language=English}}</ref>}} The most commonly noted symptom was the appearance of ]es (or ''gavocciolos'') in the groin, neck and armpits, which oozed pus and bled when opened.<ref name=Byrne2004pp21-9/> ]'s description:

{{Blockquote | style=font-size:100% |In men and women alike it first betrayed itself by the emergence of certain ]s in the groin or armpits, some of which grew as large as a common apple, others as an egg&nbsp;... From the two said parts of the body this deadly ''gavocciolo'' soon began to propagate and spread itself in all directions indifferently; after which the form of the ] began to change, black spots or livid making their appearance in many cases on the arm or the thigh or elsewhere, now few and large, now minute and numerous. As the ''gavocciolo'' had been and still was an infallible token of approaching death, such also were these spots on whomsoever they showed themselves.<ref>{{Citation| vauthors = Boccaccio G |title=Decameron|year=1351|title-link=The Decameron}}</ref><ref>{{cite web | vauthors = Mark JJ |title=Boccaccio on the Black Death: Text & Commentary |url=https://www.worldhistory.org/article/1537/boccaccio-on-the-black-death-text--commentary/ |website=] |date=3 April 2020 |access-date=20 April 2021 |archive-date=20 April 2021 |archive-url= https://web.archive.org/web/20210420181944/https://www.worldhistory.org/article/1537/boccaccio-on-the-black-death-text--commentary/ |url-status=live }}</ref>{{efn|The only medical detail that is questionable in Boccaccio's description is that the ''gavocciolo'' was an "infallible token of approaching death", as, if the bubo discharges, recovery is possible.{{sfn|Ziegler|1998|pages=18–19}}}}}}

This was followed by acute ] and ]. Most people died two to seven days after initial infection. Freckle-like spots and rashes,<ref>{{cite book | vauthors = Herlihy D | date = 1997 | title = The Black Death and the Transformation of the West | location = Cambridge, Massachusetts | publisher = Harvard University Press | isbn = 978-0-674-07613-6 | page=29}}</ref> which may have been caused by ]s, were identified as another potential sign of plague.

====Pneumonic plague====
], whose master Cardinal ] died of plague in 1348, noted a distinct form of the disease, ], that infected the lungs and led to respiratory problems.<ref name=Byrne2004pp21-9/> Symptoms include fever, cough and ]. As the disease progresses, sputum becomes free-flowing and bright red. Pneumonic plague has a mortality rate of 90–95%.{{sfn|Byrne|2004|p=8}}

====Septicemic plague====
] is the least common of the three forms, with an untreated mortality rate near 100%. Symptoms are high fevers and purple skin patches (] due to ]).{{sfn|Byrne|2004|p=8}} In cases of pneumonic and particularly septicemic plague, the progress of the disease is so rapid that there would often be no time for the development of the enlarged lymph nodes that were noted as buboes.{{sfn|Byrne|2004|p=8}}

===Consequences===
{{Main|Consequences of the Black Death}} {{Main|Consequences of the Black Death}}
Figures for the ] vary widely by area and from source to source as new research and discoveries come to light. It killed an estimated 75–200 million people in the 14th century.<ref>{{cite news |url=http://www.abc.net.au/science/articles/2008/01/29/2149185.htm |title=Black death 'discriminated' between victims (ABC News in Science) |publisher=Abc.net.au |author=ABC/Reuters |date=Tuesday, 29 January 2008 |accessdate=2008-11-03}}</ref><ref>{{cite web |url=http://news.bbc.co.uk/2/hi/health/1576875.stm |title=BBC News &#124; HEALTH &#124; De-coding the Black Death |publisher=News.bbc.co.uk |date=Wednesday, 3 October 2001, 21:51 GMT 22:51 UK |accessdate=2008-11-03}}</ref><ref>{{cite web |url=http://www.wired.com/medtech/health/news/2001/10/47288 |title=Black Death's Gene Code Cracked |publisher=Wired.com |date= |accessdate=2008-11-03}}</ref> According to medieval historian ] in 2007:


====Deaths====
<blockquote>The trend of recent research is pointing to a figure more like 45% to 50% of the European population dying during a four-year period. There is a fair amount of geographic variation. In Mediterranean Europe, areas such as Italy, the south of France and Spain, where plague ran for about four years consecutively, it was probably closer to 75% to 80% of the population. In Germany and England ... it was probably closer to 20%.<ref>], ''The Late Middle Ages'', audio/video course produced by ], (2007) ISBN 978-1-59803-345-8.</ref></blockquote>
]'', an ] on the universality of death, was a common painting motif in the late medieval period.]]


There are no exact figures for the death toll; the rate varied widely by locality. Urban centers with higher populations suffered longer periods of abnormal mortality.<ref>{{cite journal | vauthors = Olea RA, Christakos G | title = Duration of urban mortality for the 14th-century Black Death epidemic | journal = Human Biology | volume = 77 | issue = 3 | pages = 291–303 | date = June 2005 | pmid = 16392633 | doi = 10.1353/hub.2005.0051 | s2cid = 5993227 }}</ref> Some estimate that it may have killed between 75,000,000 and 200,000,000 people in Eurasia.<ref name="ABC/Reuters">{{cite news|url=http://www.abc.net.au/science/articles/2008/01/29/2149185.htm|title=Black death 'discriminated' between victims (ABC News in Science)|date=29 January 2008|access-date=3 November 2008|url-status=live|archive-url=https://web.archive.org/web/20161220120404/http://www.abc.net.au/science/articles/2008/01/29/2149185.htm|archive-date=20 December 2016|publisher=Australian Broadcasting Corporation}}</ref><ref name="Black Death's Gene Code Cracked">{{cite news|url=http://archive.wired.com/medtech/health/news/2001/10/47288|title=Black Death's Gene Code Cracked|magazine=Wired|date=3 October 2001|access-date=12 February 2015|archive-url=https://web.archive.org/web/20150426160438/http://archive.wired.com/medtech/health/news/2001/10/47288|archive-date=26 April 2015|url-status=live}}</ref><ref name="De-coding the Black Death">{{cite news |url=http://news.bbc.co.uk/2/hi/health/1576875.stm |title=De-coding the Black Death |work=BBC News |date=3 October 2001 |access-date=3 November 2008 |archive-url=https://web.archive.org/web/20170707042715/http://news.bbc.co.uk/2/hi/health/1576875.stm |archive-date=7 July 2017 |url-status=live }}</ref>{{Better source needed|reason=200 million number seems high, see talk page|date=April 2020}} A study published in 2022 of pollen samples across Europe from 1250 to 1450 was used to estimate changes in agricultural output before and after the Black Death. The authors found great variability in different regions, with evidence for high mortality in areas of Scandinavia, France, western Germany, Greece, and central Italy, but uninterrupted agricultural growth in central and eastern Europe, Iberia, and Ireland.<ref>{{Cite journal|last1=Izdebski|first1=A.|last2=Guzowski|first2=P.|last3=Poniat|first3=R.|last4=Masci|first4=L.|last5=Palli|first5=J.|last6=Vignola|first6=C.|last7=Bauch|first7=M.|last8=Cocozza|first8=C.|last9=Fernandes|first9=R.|last10=Ljungqvist|first10=F. C.|last11=Newfield|first11=T.|date=2022-02-10|title=Palaeoecological data indicates land-use changes across Europe linked to spatial heterogeneity in mortality during the Black Death pandemic|journal=Nature Ecology & Evolution|volume=6|issue=3|language=en|pages=297–306|doi=10.1038/s41559-021-01652-4|pmid=35145268|pmc=8913360 |bibcode=2022NatEE...6..297I |s2cid=246750095|issn=2397-334X}}</ref> The authors concluded that "the pandemic was immensely destructive in some areas, but in others it had a far lighter touch ... invalidates histories of the Black Death that assume Y. pestis was uniformly prevalent, or nearly so, across Europe and that the pandemic had a devastating demographic impact everywhere."
]
The most widely accepted estimate for the Middle East, including ], ] and ], during this time, is for a death rate of about a third.<ref></ref> The Black Death killed about 40% of ]'s population.<ref>, ''U.S. Library of Congress''</ref> Half of Paris's population of 100,000 people had died. In Italy, ]'s population was reduced from 110,000 or 120,000 inhabitants in 1338 to 50,000 in 1351. At least 60% of ]'s and ]'s population perished.<ref>{{Cite web |last=Snell |first=Melissa |url=http://historymedren.about.com/od/theblackdeath/a/greatmortality_2.htm |title=The Great Mortality |publisher=Historymedren.about.com |accessdate=2009-04-19 |year=2006 |postscript=<!--None-->}}</ref> Before 1350, there were about 170,000 settlements in Germany, and this had been reduced by nearly 40,000 by 1450.<ref>{{citebook|title=Peasant Fires: The Drummer of Niklashausen|author=Richard Wunderli|publisher=]|page=52|isbn=0253367255|year=1992}}</ref> The ]s of Europe had no apparent response to the crisis because no one knew its cause or how it spread. In 1348, the plague spread so rapidly that before any physicians or government authorities had time to reflect upon its origins, about a third of the European population had already perished. In crowded cities, it was not uncommon for as much as fifty percent of the population to die. Europeans living in isolated areas suffered less, whereas monks and priests were especially hard hit since they cared for the Black Death's victims.<ref>J. M. Bennett and C. W. Hollister, ''Medieval Europe: A Short History'' (New York: McGraw-Hill, 2006), p. 329.</ref> Because 14th century healers were at a loss to explain the cause, Europeans turned to astrological forces, ]s, and the poisoning of wells by Jews as possible reasons for the plague's emergence.<ref name=Bennet&Hollister2006/> The mechanism of infection and transmission of diseases was little understood in the 14th century; many people believed only God's anger could produce such horrific displays. There were many attacks against ] communities.<ref name=JewishEncyclopedia>, JewishEncyclopedia.com</ref> In August 1349, the Jewish communities of ] and ] were exterminated. In February of that same year, the citizens of Strasbourg murdered 2,000 Jews.<ref name=JewishEncyclopedia/> By 1351, 60 major and 150 smaller Jewish communities had been destroyed.<ref>.</ref>


The Black Death killed, by various estimations, from 25 to 60% of Europe's population. Robert Gottfried writes that as early as 1351, "agents for ] calculated the number of dead in Christian Europe at 23,840,000. With a preplague population of about 75 million, Clement's figure accounts for mortality of 31%-a rate about midway between the 50% mortality estimated for East Anglia, Tuscany, and parts of Scandinavia, and the less-than-15% morbidity for Bohemia and Galicia. And it is unerringly close to Froissart's claim that "a third of the world died," a measurement probably drawn from St. John's figure of mortality from plague in the ], a favorite medieval source of information."{{sfn|Gottfried|2010|p=77}} ] proposes 60% mortality rate for Europe as a whole based on available data, with up to 80% based on poor nutritional conditions in the 14th century.<ref>{{cite journal |last1=Noymer |first1=Andrew |title=Contesting the Cause and Severity of the Black Death: A Review Essay |journal=Population and Development Review |date=2007 |volume=33 |issue=3 |pages=616–627 |url=https://pure.iiasa.ac.at/id/eprint/8461/1/RP-07-05.pdf |access-date=13 December 2023 |issn=0098-7921 |archive-date=1 January 2024 |archive-url=https://web.archive.org/web/20240101022834/https://pure.iiasa.ac.at/id/eprint/8461/1/RP-07-05.pdf |url-status=live }}</ref><ref name="Benedictow" />{{efn|Norwegian historian Ole Benedictow suggests: {{Blockquote | style=font-size:100% | Detailed study of the mortality data available points to two conspicuous features in relation to the mortality caused by the Black Death: namely the extreme level of mortality caused by the Black Death, and the remarkable similarity or consistency of the level of mortality, from Spain in southern Europe to England in north-western Europe. The data is sufficiently widespread and numerous to make it likely that the Black Death swept away around 60% of Europe's population. The generally assumed population of Europe at the time is about 80 million, implying that around 50 million people died in the Black Death.<ref name="Benedictow">Ole J. Benedictow, , ''History Today'' Volume 55 Issue 3 March 2005 ({{Webarchive|url=https://web.archive.org/web/20161103234057/http://www.historytoday.com/ole-j-benedictow/black-death-greatest-catastrophe-ever |date=3 November 2016 }}). Cf. Benedictow, ''The Black Death 1346–1353: The Complete History'', Boydell Press (2012), pp. 380ff. ISBN 9781843832140</ref>}}}} According to medieval historian ], it is likely that over four years, 45–50% of the European population died of plague.<ref name="Daileader" />{{efn|According to medieval historian ],{{Blockquote | style=font-size:100% | The trend of recent research is pointing to a figure more like 45–50% of the European population dying during a four-year period. There is a fair amount of geographic variation. In Mediterranean Europe, areas such as Italy, the south of France and Spain, where plague ran for about four years consecutively, it was probably closer to 75–80% of the population. In Germany and England&nbsp;... it was probably closer to 20%.<ref name="Daileader">], ''The Late Middle Ages'', audio/video course produced by ], (2007) {{ISBN|978-1-59803-345-8}}.</ref>}}}}
] as a ].]]


The overwhelming number of deaths in Europe sometimes made mass burials necessary, and some sites had hundreds or thousands of bodies.<ref name=":3">{{cite journal | vauthors = Antoine D |title=The Archaeology of 'Plague' |journal=Medical History |date=2008 |volume=52 |issue=S27 |pages=101–114 |doi=10.1017/S0025727300072112 |s2cid=16241962 |doi-access=free }}</ref> The mass burial sites that have been excavated have allowed archaeologists to continue interpreting and defining the biological, sociological, historical, and anthropological implications of the Black Death.<ref name=":3" /> The mortality rate of the Black Death in the 14th century was far greater than the worst 20th-century outbreaks of ''Y. pestis'' plague, which occurred in India and killed as much as 3% of the population of certain cities.<ref name="Cohn 2010">{{cite book | vauthors = Cohn SK |chapter=Black Death, social and economic impact of the |url=https://www.oxfordreference.com/view/10.1093/acref/9780198662624.001.0001/acref-9780198662624-e-0907 |title=The Oxford Dictionary of the Middle Ages |year=2010 | veditors = Bjork RE |publisher=Oxford University Press |doi=10.1093/acref/9780198662624.001.0001 |isbn=978-0-19-866262-4 |access-date=11 April 2020 |archive-date=11 April 2020 |archive-url= https://web.archive.org/web/20200411222452/https://www.oxfordreference.com/view/10.1093/acref/9780198662624.001.0001/acref-9780198662624-e-0907 |url-status=live }}</ref>
Where government authorities were concerned, most ] instituted measures that prohibited exports of foodstuffs, condemned ] ], set ] on grain and outlawed large-scale fishing. At best, they proved mostly unenforceable and at worst they contributed to a continent-wide downward spiral. The hardest hit lands, like England, were unable to buy grain abroad: from France because of the prohibition, and from most of the rest of the grain producers because of crop failures from shortage of labour. Any grain that could be shipped was eventually taken by ] or ]s to be sold on the black market. Meanwhile, many of the largest countries, most notably England and ], had been at war, using up much of their ] and exacerbating ]. In 1337, on the eve of the first wave of the Black Death, England and France went to war in what would become known as the ]. Malnutrition, poverty, disease and hunger, coupled with war, growing inflation and other economic concerns made Europe in the mid-14th century ripe for tragedy. The Brotherhood of the ]s, a movement said to number up to 800,000, reached its peak of popularity.<ref>{{cite web |url=http://www.dshs.state.tx.us/preparedness/bt_public_history_plague.shtm |title=Texas Department of State Health Services, History of Plague |publisher=Dshs.state.tx.us |date= |accessdate=2008-11-03}}</ref>


In 1348, the disease spread so rapidly that nearly a third of the European population perished before any physicians or government authorities had time to reflect upon its origins. In crowded cities, it was not uncommon for as much as 50% of the population to die.{{sfn|Christakos|Olea|Serre|Wang|2005|pp=110–14}} Half of Paris' population of 100,000 people died. In Italy, the population of ] was reduced from between 110,000 and 120,000 inhabitants in 1338 to 50,000 in 1351. At least 60% of the population of ] and ] perished,<ref>{{cite web | vauthors = Snell M |url= http://historymedren.about.com/od/theblackdeath/a/greatmortality_2.htm |title=The Great Mortality |publisher=Historymedren.about.com |access-date=19 April 2009 |year=2006 |archive-url=https://web.archive.org/web/20090310140601/http://historymedren.about.com/od/theblackdeath/a/greatmortality_2.htm |archive-date=10 March 2009 |url-status=live }}</ref> and a similar percentage of Londoners may have died from the disease as well,<ref name="guardian">{{cite news |url= https://www.theguardian.com/science/2014/mar/29/black-death-not-spread-rat-fleas-london-plague |title= Black death was not spread by rat fleas, say researchers |first=Thorpe |last=Vanessa |date= 29 March 2014 |newspaper= The Guardian |access-date= 29 March 2014 |archive-url= https://web.archive.org/web/20140330010701/http://www.theguardian.com/science/2014/mar/29/black-death-not-spread-rat-fleas-london-plague |archive-date= 30 March 2014 |url-status= live }}</ref> leaving a death toll of approximately 62,000 between 1346 and 1353.{{sfn|Tignor|Brown|Liu|Shaw|2014|p=407}}{{efn|While contemporary accounts report mass burial pits being created in response to the large number of dead, recent scientific investigations of a burial pit in Central London found well-preserved individuals to be buried in isolated, evenly spaced graves, suggesting at least some pre-planning and Christian burials at this time.{{sfn|Dick|Pringle|Sloane|Carver|2015}}}} Florence's tax records suggest that 80% of the city's population died within four months in 1348.{{r|Cohn 2010}} Before 1350, there were about 170,000 settlements in Germany, and this was reduced by nearly 40,000 by 1450.<ref>{{cite book|title=Peasant Fires: The Drummer of Niklashausen| vauthors = Wunderli R |publisher=Indiana University Press|page=52|isbn=978-0-253-36725-9|year=1992}}</ref> The disease bypassed some areas, with the most isolated areas being less vulnerable to ]. Plague did not appear in ] until the turn of the 15th century, and the impact was less severe on the populations of ], ], northern Germany, and areas of Poland.{{r|Cohn 2010}} Monks, nuns, and priests were especially hard-hit since they cared for people ill with the plague.{{sfn|Bennett|Hollister|2006|p=329}} The level of mortality in the rest of Eastern Europe was likely similar to that of Western Europe in the first outbreak, with descriptions suggesting a similar effect on Russian towns, and the cycles of plague in Russia being roughly equivalent.<ref name="Belich"/>
===Recurrence===
In England, in the absence of census figures, historians propose a range of pre-incident population figures from as high as 7&nbsp;million to as low as 4&nbsp;million in 1300,<ref>] and England: A Comparative Study], Stuart J. Borsch, Austin: University of Texas</ref> and a post-incident population figure as low as 2&nbsp;million.<ref>Secondary sources such as the ''Cambridge History of Medieval England'' often contain discussions of methodology in reaching these figures that are necessary reading for anyone wishing to understand this controversial episode in more detail.</ref> By the end of 1350 the Black Death had subsided, but it never really died out in England over the next few hundred years: there were further outbreaks in 1361–62, 1369, 1379–83, 1389–93, and throughout the first half of the 15th century.<ref>{{cite web |url=http://www.bbc.co.uk/history/british/middle_ages/black_09.shtml |title=BBC{{–}} History{{–}} Black Death |publisher=bbc.co.uk |date= |accessdate=2008-11-03}}</ref> The plague often killed 10% of a community in less than a year—in the worst epidemics, such as at ] in 1579 and ] in 1636, as many as 30 or 40%. The most general outbreaks in ] and ] England, all coinciding with years of plague in Germany and the ], seem to have begun in 1498, 1535, 1543, 1563, 1589, 1603, 1625, and 1636.<ref>{{cite web |url=http://www.bbc.co.uk/radio4/history/voices/voices_salisbury.shtml |title=BBC{{–}} Radio 4 Voices of the Powerless{{–}} 29 August 2002 Plague in Tudor and Stuart Britain |publisher=Bbc.co.uk |date= |accessdate=2008-11-03}}</ref>
] in Moscow in 1771. During the course of the ], between 50,000 and 100,000 died (1/6 to 1/3 of its population).]]
The plague repeatedly returned to haunt Europe and the Mediterranean throughout the 14th to 17th centuries, and although bubonic plague still occurs in isolated cases today, the ] in 1665–1666 is generally recognised as one of the last major outbreaks.<ref>{{cite web |url=http://www.britainexpress.com/History/plague.htm |title=The London Plague 1665 |publisher=Britainexpress.com |date= |accessdate=2008-11-03}}</ref> According to Biraben 1671 was the first year since 1346 when northern and western parts of Europe were free of plague.<ref>J. N. Hays (1998). "''''". p 58. ISBN 0813525284</ref> The ] was particularly widespread in the following years: 1360–1363; 1374; 1400; 1438–1439; 1456–1457; 1464–1466; 1481–1485; 1500–1503; 1518–1531; 1544–1548; 1563–1566; 1573–1588; 1596–1599; 1602–1611; 1623–1640; 1644–1654; and 1664–1667.<ref>"''''". J. N. Hays (2005). p.46. ISBN 1851096582</ref> The Black Death ravaged Europe for three years before it continued on into Russia, where the disease hit somewhere once every five or six years from 1350 to 1490.<ref>"''''". Joseph Patrick Byrne (2004). p.62. ISBN 0313324921</ref>


] bury plague victims]]
In 1466, perhaps 40,000&nbsp;people died of plague in Paris.<ref>, 1911 Edition of the Encyclopædia Britannica</ref> According to Biraben, plague was present in Paris for almost one year in three in the 16th and 17th centuries to 1670.<ref>Vanessa Harding (2002). "''''". p.25. ISBN 0521811260</ref> In 1570, as many as 200,000 may have died in Moscow and in the adjacent neighborhood.<ref></ref> Plague epidemics ravaged London in 1563, 1593, 1603, 1625, 1636, and 1665,<ref>Vanessa Harding (2002). "''''". p.24. ISBN 0521811260</ref> reducing its population by 10 to 30% during those years.<ref>"", J. A. I. Champion, ''Epidemic Disease in London'', ''Centre for Metropolitan History Working Papers Series'', No. 1 (1993).</ref> ] lost over 10% of its population to plague in 1623–1625, and again in 1635–1636, 1655, and 1664.<ref>. J.P.Sommerville.</ref> There were twenty-two outbreaks of plague in ] between 1361 and 1528.<ref>"''''". Brian Pullan. (2006). p.151. ISBN 0415377005</ref> The plague of 1576-1577 killed 50,000 in Venice, almost a third of the population.<ref>"''''". Mary Lindemann (1999). ]. p.41. ISBN 0521423546</ref> Late outbreaks in central Europe included the ], which is associated with troop movements during the ], and the ] in 1679. Over 60% of Norway's population died from 1348 to 1350.<ref name="forskning">{{cite web |url=http://www.forskning.no/Artikler/2004/juli/1090833676.68 |title=Svartedauden enda verre enn antatt |publisher=Forskning.no |author=Harald Aastorp |date=2004-08-01 |accessdate=2009-01-03}}</ref> The last plague outbreak ravaged ] in 1654.<ref name="cripkl">{{cite web |url=http://www.dnms.no/index.php?kat_id=16&art_id=87 |title=DNMS.NO : Michael: 2005 : 03/2005 : Book review: Black Death and hard facts |publisher=Dnms.no |author=Øivind Larsen |date= |accessdate=2008-11-03}}</ref>
In 1382, the physician to the ], Raimundo Chalmel de Vinario ({{Langx|la|Magister Raimundus|lit=Master Raymond}}), observed the decreasing mortality rate of successive outbreaks of plague in 1347–1348, 1362, 1371 and 1382 in his treatise ''On Epidemics'' ({{Langx|la|De epidemica|label=none}}).<ref name=":4">{{Cite book| vauthors = Byrne JP |chapter-url=https://books.google.com/books?id=5KtDfvlSrDAC&pg=PA354|title=Encyclopedia of the Black Death|publisher=ABC-CLIO|year=2012|isbn=978-1-59884-253-1|location=Santa Barbara, California|pages=354|language=en|chapter=Vinario, Raimundo Chalmel de (Magister Raimundus; Chalmelli; Chalin; d. after 1382)|access-date=24 December 2020|archive-date=13 June 2021|archive-url=https://web.archive.org/web/20210613035405/https://books.google.com/books?id=5KtDfvlSrDAC&pg=PA354|url-status=live}}</ref> In the first outbreak, two thirds of the population contracted the illness and most patients died; in the next, half the population became ill but only some died; by the third, a tenth were affected and many survived; while by the fourth occurrence, only one in twenty people were sickened and most of them survived.<ref name=":4" /> By the 1380s in Europe, the plague predominantly affected children.{{r|Cohn 2010}} Chalmel de Vinario recognised that ] was ineffective (though he continued to prescribe bleeding for members of the ], whom he disliked), and said that all true cases of plague were caused by ]s and were incurable; he was never able to effect a cure.<ref name=":4" />


The populations of some Italian cities, notably ], did not regain their pre-14th century size until the 19th century.{{sfn|Nauert|2006|page=106}} Italian chronicler ] recorded his experience from ], where plague arrived in May 1348:
In the first half of the 17th century a plague claimed some 1,730,000&nbsp;victims in Italy, or about 14% of the population.<ref>Karl Julius Beloch, ''Bevölkerungsgeschichte Italiens'', volume 3, pp. 359–360.</ref> In 1656 the plague killed about half of ]' 300,000 inhabitants.<ref>{{cite web |url=http://faculty.ed.umuc.edu/~jmatthew/naples/goldenage.htm |title=Naples in the 1600s |publisher=Faculty.ed.umuc.edu |date= |accessdate=2008-11-03}}</ref> More than 1,250,000&nbsp;deaths resulted from the extreme incidence of plague in 17th century ].<ref>, S. G. Payne, ''A History of Spain and Portugal''</ref> The ] probably reduced the population of ] by half.<ref name="pandemics"/> At least two million people died of the disease in ] during the first
{{blockquote|Father abandoned child, wife husband, one brother another; for this illness seemed to strike through the breath and sight. And so they died. And none could be found to bury the dead for money or friendship. Members of a household brought their dead to a ditch as best they could, without priest, without divine offices ... great pits were dug and piled deep with the multitude of dead. And they died by the hundreds both day and night ... And as soon as those ditches were filled more were dug ... And I, Agnolo di Tura ... buried my five children with my own hands. And there were also those who were so sparsely covered with earth that the dogs dragged them forth and devoured many bodies throughout the city. There was no one who wept for any death, for all awaited death. And so many died that all believed it was the end of the world.<ref> {{Webarchive|url=https://web.archive.org/web/20080829223455/http://www.u.arizona.edu/%7Eafutrell/w%20civ%2002/plaguereadings.html |date=29 August 2008 }} from P. M. Rogers, ''Aspects of Western Civilization'', Prentice Hall, 2000, pp. 353–65.</ref>}}
seventy years of the 17th century.<ref>"''''". Stephen Porter (2009). Amberley Publishing. p.25. ISBN 1848680872</ref> In the ], an estimated eight million ] were killed by bubonic plague and ].<ref>, TIME</ref> In 1709–1713, a ] that followed the ] (1700–1721, ] v. Russia and allies)<ref>{{cite web |url=http://depts.washington.edu/baltic/papers/poland.htm
|title=Kathy McDonough, Empire of Poland |publisher=Depts.washington.edu
|date=
|accessdate=2008-11-03}}</ref> killed about 100,000 in Sweden,<ref>"''''". John T. Alexander (2002). ]. p.21. ISBN 0195158180</ref> and 300,000 in Prussia.<ref name="pandemics">"''''". James Clarke & Co. (2004). p.72. ISBN 022717240X</ref> The plague killed two-thirds of the inhabitants of ],<ref>{{cite web |url=http://www.tabblo.com/studio/stories/view/409531/ |title=Ruttopuisto{{–}} Plague Park |publisher=Tabblo.com |date= |accessdate=2008-11-03}}</ref> and claimed a third of ]'s population.<ref>"''''". Tony Griffiths (2009). ]. p.9. ISBN 0195386388</ref> Europe's last major epidemic occurred in 1720 in ].<ref name="forskning" />
]
The Black Death ravaged much of the ].<ref></ref> Plague epidemics kept returning to the Islamic world up to the 19th century.<ref></ref> The cities of North Africa were especially hard hit by the disease. 30,000–50,000 died in ] in 1620–21, 1654–57, 1665, 1691, and 1740–42.<ref>"''''". Robert Davis (2004) ISBN 1-4039-4551-9.</ref> Plague remained a major event in ] society until the second quarter of the 19th century. Between 1701 and 1750, 37 larger and smaller plague epidemics were recorded in ], and 31 between 1751 and 1800.<ref>{{cite book|author=Université de Strasbourg. Institut de turcologie, Université de Strasbourg. Institut d'études turques, Association pour le développement des études turques.|title=Turcica|publisher=Éditions Klincksieck|year=1998|page=198}}</ref> ] has suffered severely from visitations of the plague, and sometimes two-thirds of its population has been wiped out.<ref>"''''". Charles Philip Issawi (1988). ]. p.99. ISBN 0-19-504951-9</ref>


The most widely accepted estimate for the Middle East, including Iraq, Iran, and Syria, during this time, is for a death toll of about a third of the population.<ref>{{cite web|url=http://old.nationalreview.com/interrogatory/kelly200509140843.asp|title=Q&A with John Kelly on The Great Mortality on National Review Online| vauthors = Lopez KJ |date=14 September 2005|publisher=Nationalreview.com|url-status=dead|archive-url=https://web.archive.org/web/20120216075334/http://old.nationalreview.com/interrogatory/kelly200509140843.asp|archive-date=16 February 2012|access-date=9 November 2016}}</ref> The Black Death killed about 40% of Egypt's population.<ref> {{Webarchive|url=https://web.archive.org/web/20130117011718/http://countrystudies.us/egypt/57.htm |date=17 January 2013 }}, ''U.S. Library of Congress''</ref> In Cairo, with a population numbering as many as 600,000, and possibly the largest city west of China, between one third and 40% of the inhabitants died within eight months.<ref name=":7" /> By the 18th century, the population of Cairo was halved from its numbers in 1347.<ref name=":7" />
The ] started in China in the middle of the 19th century, spreading plague to all inhabited
continents and killing 10 million people in India alone.<ref>, sciencemag.org</ref> The ] bacterium could develop ] and again become a major health threat. The ability to resist many of the antibiotics used against plague has been found so far in only a single case of the disease in ].<ref>, SciDev.Net</ref> From 1944 through 1993, 362 cases of human plague were reported in the United States; approximately 90% of these occurred in four western states.<ref>, Centers for Disease Control and Prevention</ref> Plague was confirmed in the United States from nine western states during 1995.<ref></ref>


===In culture=== ====Economic====
It has been suggested that the Black Death, like other outbreaks through history, disproportionately affected the poorest people and those already in worse physical condition than the wealthier citizens.<ref>{{cite web | url=https://www.science.org/content/article/black-death-fatal-flu-past-pandemics-show-why-people-margins-suffer-most | title=From Black Death to fatal flu, past pandemics show why people on the margins suffer most | access-date=1 January 2023 | archive-date=1 October 2021 | archive-url=https://web.archive.org/web/20211001204644/https://www.science.org/content/article/black-death-fatal-flu-past-pandemics-show-why-people-margins-suffer-most | url-status=live }}</ref>
{{Main|Black Death in medieval culture}}
]'s '']'' (c.1562) reflects the social upheaval and terror that followed the plague which devastated medieval Europe]]
The Black Death had a profound impact on art and literature throughout the generation that experienced it. Much of the most useful manifestations of the Black Death in literature, to historians, comes from the accounts of its chroniclers. Some of these chroniclers were famous writers, philosophers and rulers such as ] and ]. Their writings, however, did not reach the majority of the European population. Petrarch's work was read mainly by wealthy nobles and merchants of Italian ]s. He wrote hundreds of letters and vernacular poetry, and passed on to later generations a revised interpretation of ].<ref>J. M. Bennett and C. W. Hollister, ''Medieval Europe: A Short History'' (New York: McGraw-Hill, 2006), p. 372.</ref> There was one ], writing in the ] long out of fashion, who was active in 1348. ] composed the sorrowful '']'' "Meravilhar no·s devo pas las gens" during the height of the plague in ].


But along with population decline from the pandemic, wages soared in response to a subsequent labour shortage.{{sfn|Scheidel|2017| pages =292–93, 304}} In some places rents collapsed (e.g., lettings "used to bring in £5, and now but £1.")<ref name=gasquet/>{{rp|158}}
{{quote|They died by the hundreds, both day and night, and all were thrown in ... ditches and covered with earth. And as soon as those ditches were filled, more were dug. And I, Agnolo di Tura ... buried my five children with my own hands ... And so many died that all believed it was the end of the world.|The Plague in Siena: An Italian Chronicle<ref>{{cite web |url=http://www.u.arizona.edu/~afutrell/w%20civ%2002/plaguereadings.html |title=plague readings |publisher=u.arizona.edu |date= |accessdate=2008-11-03}}</ref>}}


However, many labourers, artisans, and craftsmen—those living from money-wages alone—suffered a reduction in real incomes owing to rampant inflation.{{sfn|Munro|2004|p=352}} Landowners were also pushed to substitute monetary rents for labour services in an effort to keep tenants.<ref>{{Cite web|url=https://www.britannica.com/event/Black-Death|title=Black Death &#124; Causes, Facts, and Consequences|website=Encyclopædia Britannica|url-status=live|archive-url=https://web.archive.org/web/20190709135155/https://www.britannica.com/event/Black-Death|archive-date=9 July 2019|access-date=26 November 2019}}</ref> Taxes and tithes became difficult to collect, with living poor refusing to cover the share of the rich deceased, because many properties were empty and unfarmed, and because tax-collectors, where they could be employed, refused to go to plague spots.<ref name=gasquet/>{{rp|158}}
{{quote|How many valiant men, how many fair ladies, breakfast with their kinfolk and the same night supped with their ancestors in the next world! The condition of the people was pitiable to behold. They sickened by the thousands daily, and died unattended and without help. Many died in the open street, others dying in their houses, made it known by the stench of their rotting bodies. Consecrated churchyards did not suffice for the burial of the vast multitude of bodies, which were heaped by the hundreds in vast trenches, like goods in a ships hold and covered with a little earth.|Giovanni Boccaccio<ref></ref>

}}
The trade disruptions in the ] caused by the Black Death was one of the reasons for its collapse.<ref>{{Cite web |last=Getz |first=Trevor |title=READ: Unit 3 Introduction – Land-Based Empires 1450 to 1750 |url=https://www.khanacademy.org/humanities/world-history-project-ap/xb41992e0ff5e0f09:unit-3-land-based-empires/xb41992e0ff5e0f09:3-0unit-3-overview/a/read-unit-3-introduction-land-based-empires-1450-to-1750 |url-status= |archive-url= |archive-date= |access-date=2024-04-19 |website=] |language=en}}</ref>

====Environmental====
A study performed by Thomas Van Hoof of the Utrecht University suggests that the innumerable deaths brought on by the pandemic cooled the climate by freeing up land and triggering ]. This may have led to the ].<ref>{{Cite news|url=http://news.bbc.co.uk/2/hi/science/nature/4755328.stm|title=Europe's chill linked to disease|date=27 February 2006 |first=Kate |last=Ravilious |work=BBC News |access-date=28 February 2006|archive-url=https://web.archive.org/web/20060427004011/http://news.bbc.co.uk/2/hi/science/nature/4755328.stm|archive-date=27 April 2006|url-status=live}}</ref>

====Persecutions====
{{See also|Persecution of Jews during the Black Death}}
] in 1349. Miniature from a 14th-century manuscript ''Antiquitates Flandriae'' by ]]]

Renewed religious fervor and ] increased in the wake of the Black Death. Some Europeans targeted "various groups such as ], ]s, foreigners, beggars, ]s", lepers,{{sfn|Nirenberg|1998}}{{sfn|Moore|1987}} and ], blaming them for the crisis. ]s, and others with skin diseases such as ] or ], were killed throughout Europe.

Because 14th-century healers and governments were at a loss to explain or stop the disease, Europeans turned to ] forces, earthquakes and the ] as possible reasons for outbreaks.{{sfn|Bennett|Hollister|2006|p=326}} Many believed the epidemic was a ] for their sins, and could be relieved by winning ].<ref>{{Cite web|url=https://www.worldhistory.org/article/1541/religious-responses-to-the-black-death/|title=Religious Responses to the Black Death|date=2020|website=World History Encyclopedia|access-date=14 November 2022|archive-date=14 November 2022|archive-url=https://web.archive.org/web/20221114035304/https://www.worldhistory.org/article/1541/religious-responses-to-the-black-death/|url-status=live}}</ref>

There were many attacks against Jewish communities.<ref name=JewishEncyclopedia> {{Webarchive|url=https://web.archive.org/web/20110804223403/http://www.jewishencyclopedia.com/view.jsp?artid=1114&letter=B |date=4 August 2011 }}, Jewishencyclopedia.com</ref> In the ] of February 1349, about 2,000 Jews were murdered.<ref name=JewishEncyclopedia/> In August 1349, the Jewish communities in ] and ] were annihilated. By 1351, 60 major and 150 smaller Jewish communities had been destroyed.<ref> {{Webarchive|url=https://web.archive.org/web/20071102055241/http://jewishhistory.org.il/history.php?startyear=1340&endyear=1349 |date=2 November 2007 }}.</ref> During this period many Jews relocated to ], where they received a welcome from King ].{{sfn|Gottfried|2010|p=74}}

====Social====
{{See also|Black Death in medieval culture}}
]'s '']'' reflects the social upheaval and terror that followed the plague, which devastated medieval Europe.]]

One theory that has been advanced is that the Black Death's devastation of ], between 1348 and 1350, resulted in a shift in the world view of people in 14th-century Italy that ultimately led to the ]. Italy was particularly badly hit by the pandemic, and the resulting familiarity with death may have caused thinkers to dwell more on their lives on Earth, rather than on ] and the ].{{sfn|Tuchman|1978}}{{efn|The Black Death caused greater upheaval to Florence's social and political structure than later epidemics. Despite a significant number of deaths among members of the ruling classes, the government of Florence continued to function during this period. Formal meetings of elected representatives were suspended during the height of the epidemic due to the chaotic conditions in the city, but a small group of officials was appointed to conduct the affairs of the city, which ensured continuity of government.{{sfn|Hatty|Hatty|1999|p=89}}}} It has also been argued that the Black Death prompted a new wave of piety, manifested in the ] of religious works of art.<ref>{{cite web |url=https://www.ucalgary.ca/applied_history/tutor/endmiddle/bluedot/blackdeath.html |title=The End of Europe's Middle Ages: The Black Death |url-status=dead |archive-url=https://web.archive.org/web/20130309162102/http://www.ucalgary.ca/applied_history/tutor/endmiddle/bluedot/blackdeath.html |archive-date=9 March 2013 |access-date=5 April 2007 |website=University of Calgary}}</ref>

This does not fully explain why the Renaissance occurred in Italy in the 14th century; the Renaissance's emergence was most likely the result of the complex interaction of the above factors,{{sfn|Brotton|2006}} in combination with an ] after the ].<ref>{{Cite web |title=Fall of Constantinople {{!}} Facts, Summary, & Significance {{!}} Britannica |url=https://www.britannica.com/event/Fall-of-Constantinople-1453 |access-date=2023-02-15 |website=Encyclopædia Britannica |language=en |archive-date=19 August 2020 |archive-url=https://web.archive.org/web/20200819143934/https://www.britannica.com/event/Fall-of-Constantinople-1453 |url-status=live }}</ref> As a result of the drastic reduction in the populace the value of the working class increased, and commoners came to enjoy more freedom. To answer the increased need for labour, workers travelled in search of the most favorable position economically.{{sfn|Netzley|1998}}{{better source needed|date=April 2020}}

Prior to the emergence of the Black Death, the continent was considered a feudalistic society, composed of ]s and city-states frequently managed by the Catholic Church.<ref name=":0">{{Cite journal| vauthors = Garrett L |date=2005|title=The Black Death|journal=HIV and National Security|url=https://www.jstor.org/stable/resrep05754.7|pages=17–19|access-date=3 December 2020|archive-date=14 October 2020|archive-url=https://web.archive.org/web/20201014214527/https://www.jstor.org/stable/resrep05754.7|url-status=live}}</ref> The pandemic completely restructured both religion and political forces; survivors began to turn to other forms of spirituality and the power dynamics of the fiefs and city-states crumbled.<ref name=":0" /><ref>{{Cite web|title=Medieval Life {{!}} Boundless World History|url=https://courses.lumenlearning.com/boundless-worldhistory/chapter/medieval-life/|access-date=2020-12-03|website=courses.lumenlearning.com|archive-date=8 February 2021|archive-url=https://web.archive.org/web/20210208080639/https://courses.lumenlearning.com/boundless-worldhistory/chapter/medieval-life/|url-status=live}}</ref> The survivors of the pandemic found not only that the prices of food were lower but also that lands were more abundant, and many of them inherited property from their dead relatives, and this probably contributed to the destabilization of ].<ref>{{Cite web |title=Black Death: The lasting impact |url=http://www.bbc.co.uk/history/british/middle_ages/black_impact_01.shtml |url-status=live |archive-url=https://web.archive.org/web/20200410122047/http://www.bbc.co.uk/history/british/middle_ages/black_impact_01.shtml |archive-date=10 April 2020 |access-date=14 April 2020 |website=BBC}}</ref>{{sfn|Haddock|Kiesling|2002}}

The word "]" has its roots in this period, though the practice of isolating people to prevent the spread of disease is older. In the city-state of ] (modern ], Croatia), a thirty-day isolation period was implemented in 1377 for new arrivals to the city from plague-affected areas. The isolation period was later extended to forty days, and given the name "quarantino" from the Italian word for "forty".<ref name="Sehdev">{{cite journal | vauthors = Sehdev PS | title = The origin of quarantine | journal = Clinical Infectious Diseases | volume = 35 | issue = 9 | pages = 1071–1072 | date = November 2002 | pmid = 12398064 | doi = 10.1086/344062 | doi-access = free }}</ref>

All institutions were affected. Smaller monasteries and convents became unviable and closed. Up to half parish churches lost their priest, apart from the parishioners. Religious sensibilities changed:<ref name=gasquet/>
{{quote|"looking back into the past, the history of the Church during the Middle Ages in England appears one continuous and stately progress. It is much nearer to the truth to say that in 1351 the whole ecclesiastical system was wholly disorganised, or, indeed, more than half ruined, and that everything had to be built up anew. To secure the most necessary public ministrations of the rites of religion the most inadequately-prepared subjects had to be accepted, and even these could be obtained only in insufficient numbers.The immediate effect on the people was a religious paralysis. Instead of turning men to God the scourge turned them to despair In time the religious sense and feeling revived, but in many respects it took a new tone, and its manifestations ran in new channelscharacterised by a devotional and more self-reflective cast than previously.<br/>The new religious spirit found outward expression in the multitude of guilds which sprang into existence at this time, in the remarkable and almost, as it may seem to some, extravagant development of certain pious practices, in the singular spread of a more personal devotion to the Blessed Sacrament, to the Blessed Virgin, to the Five Wounds, to the Holy Name, and other such manifestations of a more tender or more familiar piety.At the close of the fourteenth century and during the course of the fifteenth the supply of ornaments, furniture, plate, statues painted or in highly decked "coats," with which the churches were literally encumbered as time went on, proved a striking contrast to the comparative simplicity which characterised former days, as witnessed by a comparison of inventories.<br/>In fact, the fifteenth century witnessed the beginnings of a great middle-class movement, which can be distinctly traced to the effect of the great pestilence|source= Cardinal ]<ref name=gasquet/>{{rp|xvii}} }}

==Recurrences==

===Second plague pandemic===
{{Main|Second plague pandemic}}
], in 1665, killed up to 100,000 people.]]
] and his typical ] during the 17th-century outbreak]]

The plague repeatedly returned to haunt Europe and the Mediterranean throughout the 14th to 17th centuries.{{sfn|Porter|2009|p=25}} According to Jean-Noël Biraben, the plague was present somewhere in Europe in every year between 1346 and 1671 (although some researchers have cautions about the uncritical use of Biraben's data).{{sfn|Hays|1998|p=58}}{{sfn|Roosen|Curtis|2018}} The second pandemic was particularly widespread in the following years: 1360–1363; 1374; 1400; 1438–1439; 1456–1457; 1464–1466; 1481–1485; 1500–1503; 1518–1531; 1544–1548; 1563–1566; 1573–1588; 1596–1599; 1602–1611; 1623–1640; 1644–1654; and 1664–1667. Subsequent outbreaks, though severe, marked the plague's retreat from most of Europe (18th&nbsp;century) and North Africa (19th&nbsp;century).{{sfn|Hays|2005|p=46}}

Historian George Sussman argued that the plague had not occurred in East Africa until the 20th century.{{sfn|Sussman|2011}} However, other sources suggest that the second pandemic did indeed reach sub-Saharan Africa.{{sfn|Green|2018}}

According to historian ], "France alone lost almost a million people to the plague in the epidemic of 1628–31."{{sfn|Parker|2001|p=7}} In the first half of the 17th century, a plague killed some 1.7 million people in Italy.<ref>Karl Julius Beloch, ''Bevölkerungsgeschichte Italiens'', volume 3, pp. 359–60.</ref> More than 1.25 million deaths resulted from the extreme incidence of plague in 17th-century ].{{sfn|Payne|1973|loc=Chapter 15: The Seventeenth-Century Decline}}

The Black Death ravaged much of the ].<ref>{{cite web|url=https://www.ucalgary.ca/applied_history/tutor/islam/mongols/blackDeath.html |title=The Islamic World to 1600: The Mongol Invasions (The Black Death) |publisher=Ucalgary.ca |access-date=10 December 2011 |url-status=dead |archive-url=https://web.archive.org/web/20090721033845/http://www.ucalgary.ca/applied_history/tutor/islam/mongols/blackDeath.html |archive-date=21 July 2009 }}</ref> Plague could be found in the Islamic world almost every year between 1500 and 1850. Sometimes the outbreaks affected small areas, while other outbreaks affected multiple regions.<ref>{{Cite book | vauthors = Byrne JP | title = Encyclopedia of Pestilence, Pandemics, and Plagues: N–Z | url = https://archive.org/details/encyclopediaofpe00jose/page/519/ | publisher = ABC-CLIO | year = 2008 | page = 519 | isbn = 978-0-313-34103-8 }}</ref> Plague repeatedly struck the cities of North Africa. ] lost 30,000–50,000 inhabitants to it in 1620–1621, and again in 1654–1657, 1665, 1691, and 1740–1742.{{sfn|Davis|2004}} Cairo suffered more than fifty plague epidemics within 150 years from the plague's first appearance, with the final outbreak of the second pandemic there in the 1840s.<ref name=":7" /> Plague remained a major event in ] society until the second quarter of the 19th century. Between 1701 and 1750, thirty-seven larger and smaller epidemics were recorded in ], and an additional thirty-one between 1751 and 1800.<ref>{{cite book |author1=Université de Strasbourg |author2=Institut de turcologie, Université de Strasbourg |author3=Institut d'études turques, Association pour le développement des études turques|title=Turcica|publisher=Éditions Klincksieck|year=1998|page=198}}</ref> ] has suffered severely from visitations of the plague, and sometimes two-thirds of its population died.{{sfn|Issawi|1988|p=99}}

===Third plague pandemic===
{{Main|Third plague pandemic}}
]

The third plague pandemic (1855–1859) started in China in the mid-19th century, spreading to all inhabited continents and killing 10 million people in India alone.<ref> {{Webarchive|url=https://web.archive.org/web/20080817135739/http://www.sciencemag.org/cgi/content/full/321/5890/773 |date=17 August 2008 }}, sciencemag.org</ref> The investigation of the pathogen that caused the 19th-century plague was begun by teams of scientists who visited Hong Kong in 1894, among whom was the French-Swiss bacteriologist ], for whom the pathogen was named.{{sfn|Christakos|Olea|Serre|Wang|2005|pp=110–14}}

Twelve plague outbreaks in Australia between 1900 and 1925 resulted in over 1,000 deaths, chiefly in Sydney. This led to the establishment of a Public Health Department there which undertook some leading-edge research on plague transmission from rat fleas to humans via the bacillus ''Yersinia pestis''.<ref> {{Webarchive|url=https://web.archive.org/web/20120210023117/http://sydney.edu.au/medicine/museum/mwmuseum/index.php/Bubonic_Plague_comes_to_Sydney_in_1900 |date=10 February 2012 }}, University of Sydney, Sydney Medical School</ref>

The first North American plague epidemic was the ], followed by another outbreak in 1907–1908.{{sfn|Chase|2004}}{{sfn|Echenberg|2007}}{{sfn|Kraut|1995}}

===Modern-day===
Modern treatment methods include ]s, the use of ]s, and a ]. It is feared that the plague bacterium could develop ] and again become a major health threat. One case of a drug-resistant form of the bacterium was found in ] in 1995.<ref>{{Cite web |url=http://www.scidev.net/en/health/antibiotic-resistance/news/drugresistant-plague-a-major-threat-say-scient.html |title=Drug-resistant plague a 'major threat', say scientists |date=23 March 2007 |first=T.V. |last=Padma |website=SciDev.net |url-status=live |archiveurl=https://web.archive.org/web/20120719034621/http://www.scidev.net/en/health/antibiotic-resistance/news/drugresistant-plague-a-major-threat-say-scient.html |archivedate=19 July 2012}}</ref> Another outbreak in Madagascar was reported in November 2014.<ref>{{cite web |url=https://www.who.int/csr/don/21-november-2014-plague/en/ |title=Plague – Madagascar |date=21 November 2014 |publisher=World Health Organisation |access-date=26 November 2014 |archive-url=https://web.archive.org/web/20190502001426/https://www.who.int/csr/don/21-november-2014-plague/en/ |archive-date=2 May 2019 |url-status=dead }}</ref> In October 2017, the ] in modern times hit Madagascar, killing 170 people and infecting thousands.<ref>{{Cite news|url=https://www.wsj.com/articles/madagascar-wrestles-with-worst-outbreak-of-plague-in-half-a-century-1510788541|title=Madagascar Wrestles With Worst Outbreak of Plague in Half a Century |first1=Alexandra |last1=Wexler |first2=Amir |last2=Antoy |date=16 November 2017|work=]|access-date=17 November 2017|language=en-US |archive-url= https://web.archive.org/web/20171117010725/https://www.wsj.com/articles/madagascar-wrestles-with-worst-outbreak-of-plague-in-half-a-century-1510788541|archive-date=17 November 2017|url-status=live}}</ref>

An estimate of the ] for the modern ], after the introduction of ]s, is 11%, although it may be higher in underdeveloped regions.<ref>{{cite web|url=https://www.cdc.gov/plague/faq/index.html|author=Centers for Disease Control (CDC)|title=FAQ: Plague|date=24 September 2015|access-date=24 April 2017|archive-url=https://web.archive.org/web/20190330171757/https://www.cdc.gov/plague/faq/index.html|archive-date=30 March 2019|url-status=live}}</ref>


==See also== ==See also==
* ]
*]
*] * ]

*]
==Footnotes==
*], a human gene hypothesised to be associated with the plague
{{Notelist|30em}}
*]

*]
===Citations===
{{reflist|22em|refs=
<ref name="lead numbers">Sources for deaths: {{harvnb|Aberth|2021|page=1}}; {{harvnb|Benedictow|2021|pp=869–877}}; {{harvnb|Christakos|Olea|Serre|Wang|2005}}{{page needed|date=December 2023}}</ref>
<ref name="lead origin">'''Sources for origins'''
*{{Cite web|url=https://edition.cnn.com/2019/11/23/asia/plague-china-history-intl-hnk-scli/index.html|title=Black Death in China: A history of plagues, from ancient times to now |website=CNN|date=24 November 2019 |url-status=live|archive-url=https://web.archive.org/web/20200306011659/https://edition.cnn.com/2019/11/23/asia/plague-china-history-intl-hnk-scli/index.html|archive-date=6 March 2020|access-date=24 March 2020}}
* {{harvnb|Benedictow|2004|pp=50–51}}
* {{harvnb|Bramanti|Stenseth|Walløe|Lei|2016|pp=1–26}}
* {{Cite web|url=https://www.britannica.com/event/Black-Death|title=Black Death {{!}} Causes, Facts, and Consequences|website=Encyclopædia Britannica|language=en|access-date=2020-03-01|archive-url=https://web.archive.org/web/20190709135155/https://www.britannica.com/event/Black-Death|archive-date=9 July 2019|url-status=live}}
* {{harvnb|Sussman|2011}}</ref>}}


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* {{cite journal | vauthors = Spyrou MA, Tukhbatova RI, Wang CC, Valtueña AA, Lankapalli AK, Kondrashin VV, Tsybin VA, Khokhlov A, Kühnert D, Herbig A, Bos KI, Krause J | display-authors = 6 | title = Analysis of 3800-year-old Yersinia pestis genomes suggests Bronze Age origin for bubonic plague | journal = Nature Communications | volume = 9 | issue = 1 | pages = 2234 | date = June 2018 | pmid = 29884871 | pmc = 5993720 | doi = 10.1038/s41467-018-04550-9 | bibcode = 2018NatCo...9.2234S }}
* {{cite journal | vauthors = Spyrou MA, Keller M, Tukhbatova RI, Scheib CL, Nelson EA, Andrades Valtueña A, Neumann GU, Walker D, Alterauge A, Carty N, Cessford C, Fetz H, Gourvennec M, Hartle R, Henderson M, von Heyking K, Inskip SA, Kacki S, Key FM, Knox EL, Later C, Maheshwari-Aplin P, Peters J, Robb JE, Schreiber J, Kivisild T, Castex D, Lösch S, Harbeck M, Herbig A, Bos KI, Krause J | display-authors = 6 | title = Phylogeography of the second plague pandemic revealed through analysis of historical Yersinia pestis genomes | journal = Nature Communications | volume = 10 | issue = 1 | pages = 4470 | date = October 2019 | pmid = 31578321 | pmc = 6775055 | doi = 10.1038/s41467-019-12154-0 | author18 = S Kacki | author19 = FM Key | author16 = K von Heyking | author17 = SA Inskip | author14 = R Hartle | author15 = M Henderson | author12 = H Fetz | author13 = M Gourvennec | author10 = N Carty | author11 = C Cessford | author5 = EA Nelson | author6 = A Andrades Valtueña | author7 = GU Neumann | author8 = D Walker | author9 = A Alterauge A | bibcode = 2019NatCo..10.4470S | author30 = A Herbig | author31 = KI Bos | author32 = J Krause | author29 = M Harbeck M | author28 = S Lösch | author23 = J Peters | author22 = P Maheshwari-Aplin | author21 = C Later | author20 = EL Knox | author27 = D Castex | author26 = T Kivisild | author25 = J Schreiber | author24 = JE Robb }}
* {{cite journal | vauthors = Sussman GD | title = Was the black death in India and China? | journal = Bulletin of the History of Medicine | volume = 85 | issue = 3 | pages = 319–355 | year = 2011 | pmid = 22080795 | doi = 10.1353/bhm.2011.0054 | s2cid = 41772477 | url = https://academicworks.cuny.edu/lg_pubs/52 | access-date = 1 February 2022 | archive-date = 5 April 2022 | archive-url = https://web.archive.org/web/20220405101419/https://academicworks.cuny.edu/lg_pubs/52/ | url-status = live }}
* {{Cite book | vauthors = Tignor A, Brown E, Liu P, Shaw R, Jeremy P, Benjamin X, Holly B |title=Worlds Together, Worlds Apart, Volume 1: Beginnings to the 15th Century |publisher=W.W Norton & Company|year=2014|isbn=978-0-393-92208-0|location=New York, London}}
* {{cite book | vauthors = Tuchman B |author-link=Barbara Tuchman |year=1978 |title=A Distant Mirror |publisher=Knopf |isbn=0-394-40026-7}}
* {{cite journal | vauthors = Wagner DM, Klunk J, Harbeck M, Devault A, Waglechner N, Sahl JW, Enk J, Birdsell DN, Kuch M, Lumibao C, Poinar D, Pearson T, Fourment M, Golding B, Riehm JM, Earn DJ, Dewitte S, Rouillard JM, Grupe G, Wiechmann I, Bliska JB, Keim PS, Scholz HC, Holmes EC, Poinar H | display-authors = 6 | title = Yersinia pestis and the plague of Justinian 541-543 AD: a genomic analysis | journal = The Lancet. Infectious Diseases | volume = 14 | issue = 4 | pages = 319–326 | date = April 2014 | pmid = 24480148 | doi = 10.1016/S1473-3099(13)70323-2 }}
* {{cite journal | vauthors = Walløe L | title = Medieval and modern bubonic plague: some clinical continuities | journal = Medical History. Supplement | volume = 27 | issue = 27 | pages = 59–73 | year = 2008 | pmid = 18575082 | pmc = 2632865 | doi = 10.1017/S0025727300072094 }}
* {{cite journal | vauthors = Welford M, Bossak BH |title=Revisiting the Medieval Black Death of 1347-1351: Spatiotemporal Dynamics Suggestive of an Alternate Causation: Black death spatiotemporal dynamics |journal=Geography Compass |date=June 2010 |volume=4 |issue=6 |pages=561–575 |doi=10.1111/j.1749-8198.2010.00335.x }}
* {{cite journal | vauthors = Wheelis M | title = Biological warfare at the 1346 siege of Caffa | journal = Emerging Infectious Diseases | volume = 8 | issue = 9 | pages = 971–975 | date = September 2002 | pmid = 12194776 | pmc = 2732530 | doi = 10.3201/eid0809.010536 | doi-access = free }}
* {{cite book | vauthors = Ziegler P |title=The Black Death |year=1998|publisher=Penguin Books |isbn=978-0-14-027524-7 }} 1st editions 1969.
* {{cite book | vauthors = Zuchora-Walske C |title=Poland |location=North Mankato |publisher=ABDO Publishing |year=2013 |isbn=978-1-61783-634-3}}
{{refend}}


==Further reading== ==Further reading==
{{refbegin|30em}}
*Cantor, Norman F. (2001), ''In the Wake of the Plague: The Black Death and the World It Made'', New York, Free Press.
* {{cite journal | vauthors = Alfano V, Sgobbi M |title=A fame, peste et bello libera nos Domine: An Analysis of the Black Death in Chioggia in 1630 |journal=Journal of Family History |date=January 2022 |volume=47 |issue=1 |pages=24–40 |doi=10.1177/03631990211000615 |s2cid=233671164 }}
*Cohn, S. K. Jr., (2002), ''The Black Death Transformed: Disease and Culture in Early Renaissance Europe'', London: Arnold.
* {{Cite book | vauthors = Armstrong D |title = The Black Death: The World's Most Devastating Plague |publisher = The Great Courses |year = 2016 |asin = B01FWOO2G6 |url = http://www.thegreatcourses.com/courses/the-black-death-the-worlds-most-devastating-plague.html |access-date = 16 October 2016 |archive-date = 18 October 2016 |archive-url = https://web.archive.org/web/20161018203714/http://www.thegreatcourses.com/courses/the-black-death-the-worlds-most-devastating-plague.html |url-status = live }}
*Gasquet, F. A., (1894), ''The Great Pestilence'', London.
*Herlihy, D., (1997), ''The Black Death and the Transformation of the West'', Cambridge, Massachusetts: Harvard University Press. * {{cite book | vauthors = Bailey M |title=After the Black Death: Economy, society, and the law in fourteenth-century England |date=2021 |publisher=Oxford University Press |isbn=978-0-19-259973-5 }}
* {{cite journal | vauthors = Barker H |title=Laying the Corpses to Rest: Grain, Embargoes, and Yersinia pestis in the Black Sea, 1346–48 |journal=Speculum |date=2021 |volume=96 |issue=1 |pages=97–126 |doi=10.1086/711596 |s2cid=229344364 }}
*{{cite book |title=Plagues and Peoples |last=McNeill |first=William H. |year=1976 |publisher=Anchor/Doubleday |isbn=0-385-11256-4 }}
* {{cite book |last1=Cantor NF |title=In the wake of the plague : the Black death and the world it made |date=2015 |orig-year=2001 |location=New York |isbn=978-1-4767-9774-8 |edition=First Simon & Schuster paperback |publisher= Simon & Schuster }}
*Scott, S., and Duncan, C. J., (2001), ''Biology of Plagues: Evidence from Historical Populations'', Cambridge: Cambridge University Press.
* {{cite book | vauthors = Cohn Jr SK |title=The black death transformed : disease and culture in early Renaissance Europe |date=2002 |publisher=Arnold |location=London |isbn=978-0-340-70646-6}}
*Shrewsbury, J. F. D., (1970), ''A History of Bubonic Plague in the British Isles'', London: Cambridge University Press
* {{cite book | vauthors = Crawford DH |title=Deadly Companions: How Microbes Shaped Our History |date=2018 |publisher=Oxford University Press |isbn=978-0-19-881544-0 }}
*Twigg, G., (1984), ''The Black Death: A Biological Reappraisal'', London: Batsford.
* {{cite book | vauthors = Dols MW |title=The Black Death in the Middle East |date=2019 |publisher=Princeton University Press |location=Princeton, N.J. |isbn=978-0-691-65704-2}}
* {{cite journal | vauthors = Dols MW |title=The Comparative Communal Responses to the Black Death in Muslim and Christian Societies |journal=Viator |date=January 1974 |volume=5 |pages=269–288 |id={{ProQuest|1297911710}} |doi=10.1484/J.VIATOR.2.301626 }}
* {{cite journal | vauthors = Dols MW | title = Geographical origin of the Black Death: comment | journal = Bulletin of the History of Medicine | volume = 52 | issue = 1 | pages = 112–120 | date = 1978 | pmid = 352447 | id = {{ProQuest|1296259982}} }}
* {{cite journal | vauthors = Duncan CJ, Scott S | title = What caused the Black Death? | journal = Postgraduate Medical Journal | volume = 81 | issue = 955 | pages = 315–320 | date = May 2005 | pmid = 15879045 | pmc = 1743272 | doi = 10.1136/pgmj.2004.024075 }}
* {{Cite book |title=Plagues and Peoples | vauthors = McNeill WH |year=1976 |publisher=Anchor/Doubleday |isbn=978-0-385-11256-7 }}
* {{cite journal | vauthors = Pamuk S |title=The Black Death and the origins of the 'Great Divergence' across Europe, 1300–1600 |journal=European Review of Economic History |date=December 2007 |volume=11 |issue=3 |pages=289–317 |doi=10.1017/S1361491607002031 }}
* {{cite book | vauthors = Scott S, Duncan CJ | year =2001 | title =Biology of Plagues: Evidence from Historical Populations | place = Cambridge| publisher = Cambridge University Press | isbn = 978-0-521-80150-8 }}
* {{cite journal | vauthors = Schuenemann VJ, Bos K, DeWitte S, Schmedes S, Jamieson J, Mittnik A, Forrest S, Coombes BK, Wood JW, Earn DJ, White W, Krause J, Poinar HN | display-authors = 6 | title = Targeted enrichment of ancient pathogens yielding the pPCP1 plasmid of Yersinia pestis from victims of the Black Death | journal = Proceedings of the National Academy of Sciences of the United States of America | volume = 108 | issue = 38 | pages = E746–E752 | date = September 2011 | pmid = 21876176 | pmc = 3179067 | doi = 10.1073/pnas.1105107108 | doi-access = free | bibcode = 2011PNAS..108E.746S }}
* {{cite book | vauthors = Shrewsbury JF |title=A History of Bubonic Plague in the British Isles. |date=2005 |publisher=Cambridge Univ Pr |isbn=978-0-521-02247-7}}
* {{cite book | vauthors = Twigg G |title=The Black Death : a biological reappraisal |date=1985 |publisher=Schocken Books |location=New York |isbn=978-0-7134-4618-0 |edition=1st American}}
{{refend}}


==External links== ==External links==
* {{commons category-inline|Black Death}} {{Commons category|Black Death}}
* at ] * {{In Our Time|Black Death|b00bcqt8|Black_Death}}
* at ]


{{Black Death}} {{Black Death}}
{{Epidemics}}
{{History of infectious disease}}
{{Authority control}}


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Latest revision as of 18:11, 28 December 2024

1346–1353 pandemic in Eurasia and North Africa "The Plague" redirects here. For other uses, see The Plague (disambiguation) and Black Death (disambiguation).

Black Death
The spread of the Black Death in Europe and the Near East (1346–1353)The spread of the Black Death in Europe, North Africa, and the Near East (1346–1353)
DiseaseBubonic plague
LocationEurasia and North Africa
Date1346–1353
Deaths25,000,000 – 50,000,000 (estimated)

The Black Death was a bubonic plague pandemic that occurred in Europe from 1346 to 1353. It was one of the most fatal pandemics in human history; as many as 50 million people perished, perhaps 50% of Europe's 14th century population. The disease is caused by the bacterium Yersinia pestis and spread by fleas and through the air. One of the most significant events in European history, the Black Death had far-reaching population, economic, and cultural impacts. It was the beginning of the second plague pandemic. The plague created religious, social and economic upheavals, with profound effects on the course of European history.

The origin of the Black Death is disputed. Genetic analysis suggests Yersinia pestis bacteria evolved approximately 7,000 years ago, at the beginning of the Neolithic, with flea-mediated strains emerging around 3,800 years ago during the late Bronze Age. The immediate territorial origins of the Black Death and its outbreak remain unclear, with some evidence pointing towards Central Asia, China, the Middle East, and Europe. The pandemic was reportedly first introduced to Europe during the siege of the Genoese trading port of Kaffa in Crimea by the Golden Horde army of Jani Beg in 1347. From Crimea, it was most likely carried by fleas living on the black rats that travelled on Genoese ships, spreading through the Mediterranean Basin and reaching North Africa, West Asia, and the rest of Europe via Constantinople, Sicily, and the Italian Peninsula. There is evidence that once it came ashore, the Black Death mainly spread from person-to-person as pneumonic plague, thus explaining the quick inland spread of the epidemic, which was faster than would be expected if the primary vector was rat fleas causing bubonic plague. In 2022, it was discovered that there was a sudden surge of deaths in what is today Kyrgyzstan from the Black Death in the late 1330s; when combined with genetic evidence, this implies that the initial spread may have been unrelated to the 14th century Mongol conquests previously postulated as the cause.

The Black Death was the second great natural disaster to strike Europe during the Late Middle Ages (the first one being the Great Famine of 1315–1317) and is estimated to have killed 30% to 60% of the European population, as well as approximately 33% of the population of the Middle East. There were further outbreaks throughout the Late Middle Ages and, also due to other contributing factors (the Crisis of the Late Middle Ages), the European population did not regain its 14th century level until the 16th century. Outbreaks of the plague recurred around the world until the early 19th century.

Names

European writers contemporary with the plague described the disease in Latin as pestis or pestilentia, 'pestilence'; epidemia, 'epidemic'; mortalitas, 'mortality'. In English prior to the 18th century, the event was called the "pestilence" or "great pestilence", "the plague" or the "great death". Subsequent to the pandemic "the furste moreyn" (first murrain) or "first pestilence" was applied, to distinguish the mid-14th century phenomenon from other infectious diseases and epidemics of plague.

The 1347 pandemic plague was not referred to specifically as "black" in the time of occurrence in any European language, though the expression "black death" had occasionally been applied to fatal disease beforehand. "Black death" was not used to describe the plague pandemic in English until the 1750s; the term is first attested in 1755, where it translated Danish: den sorte død, lit.'the black death'. This expression as a proper name for the pandemic had been popularized by Swedish and Danish chroniclers in the 15th and early 16th centuries, and in the 16th and 17th centuries was transferred to other languages as a calque: Icelandic: svarti dauði, German: der schwarze Tod, and French: la mort noire. Previously, most European languages had named the pandemic a variant or calque of the Latin: magna mortalitas, lit.'Great Death'.

The phrase 'black death' – describing Death as black – is very old. Homer used it in the Odyssey to describe the monstrous Scylla, with her mouths "full of black Death" (Ancient Greek: πλεῖοι μέλανος Θανάτοιο, romanizedpleîoi mélanos Thanátoio). Seneca the Younger may have been the first to describe an epidemic as 'black death', (Latin: mors atra) but only in reference to the acute lethality and dark prognosis of disease. The 12th–13th century French physician Gilles de Corbeil had already used atra mors to refer to a "pestilential fever" (febris pestilentialis) in his work On the Signs and Symptoms of Diseases (De signis et symptomatibus aegritudium). The phrase mors nigra, 'black death', was used in 1350 by Simon de Covino (or Couvin), a Belgian astronomer, in his poem "On the Judgement of the Sun at a Feast of Saturn" (De judicio Solis in convivio Saturni), which attributes the plague to an astrological conjunction of Jupiter and Saturn. His use of the phrase is not connected unambiguously with the plague pandemic of 1347 and appears to refer to the fatal outcome of disease.

The historian Cardinal Francis Aidan Gasquet wrote about the Great Pestilence in 1893 and suggested that it had been "some form of the ordinary Eastern or bubonic plague". In 1908, Gasquet said use of the name atra mors for the 14th-century epidemic first appeared in a 1631 book on Danish history by J. I. Pontanus: "Commonly and from its effects, they called it the black death" (Vulgo & ab effectu atram mortem vocitabant).

Previous plague epidemics

Main articles: Plague (disease) and First plague pandemic
Yersinia pestis (200 × magnification), the bacterium that causes plague

Research from 2017 suggests plague first infected humans in Europe and Asia in the Late Neolithic-Early Bronze Age. Research in 2018 found evidence of Yersinia pestis in an ancient Swedish tomb, which may have been associated with the "Neolithic decline" around 3000 BCE, in which European populations fell significantly. This Y. pestis may have been different from more modern types, with bubonic plague transmissible by fleas first known from Bronze Age remains near Samara.

The symptoms of bubonic plague are first attested in a fragment of Rufus of Ephesus preserved by Oribasius; these ancient medical authorities suggest bubonic plague had appeared in the Roman Empire before the reign of Trajan, six centuries before arriving at Pelusium in the reign of Justinian I. In 2013, researchers confirmed earlier speculation that the cause of the Plague of Justinian (541–549 CE, with recurrences until 750) was Y. pestis. This is known as the first plague pandemic. In 610, the Chinese physician Chao Yuanfang described a "malignant bubo" "coming in abruptly with high fever together with the appearance of a bundle of nodes beneath the tissue." The Chinese physician Sun Simo who died in 652 also mentioned a "malignant bubo" and plague that was common in Lingnan (Guangzhou). Ole Jørgen Benedictow believes that this indicates it was an offshoot of the first plague pandemic which made its way eastward to Chinese territory by around 600.

14th-century plague

Causes

Early theory

Main article: Theories of the Black Death

A report by the Medical Faculty of Paris stated that a conjunction of planets had caused "a great pestilence in the air" (miasma theory). Muslim religious scholars taught that the pandemic was a "martyrdom and mercy" from God, assuring the believer's place in paradise. For non-believers, it was a punishment. Some Muslim doctors cautioned against trying to prevent or treat a disease sent by God. Others adopted preventive measures and treatments for plague used by Europeans. These Muslim doctors also depended on the writings of the ancient Greeks.

Predominant modern theory

The Oriental rat flea (Xenopsylla cheopis) engorged with blood. This species of flea is the primary vector for the transmission of Yersinia pestis, the organism responsible for spreading bubonic plague in most plague epidemics. Both male and female fleas feed on blood and can transmit the infection.Oriental rat flea (Xenopsylla cheopis) infected with the Yersinia pestis bacterium which appears as a dark mass in the gut. The foregut (proventriculus) of this flea is blocked by a Y. pestis biofilm; when the flea feeds on an uninfected host Y. pestis is regurgitated into the wound, causing infection.

Due to climate change in Asia, rodents began to flee the dried-out grasslands to more populated areas, spreading the disease. The plague disease, caused by the bacterium Yersinia pestis, is enzootic (commonly present) in populations of fleas carried by ground rodents, including marmots, in various areas, including Central Asia, Kurdistan, West Asia, North India, Uganda, and the western United States.

Y. pestis was discovered by Alexandre Yersin, a pupil of Louis Pasteur, during an epidemic of bubonic plague in Hong Kong in 1894; Yersin also proved this bacterium was present in rodents and suggested the rat was the main vehicle of transmission. The mechanism by which Y. pestis is usually transmitted was established in 1898 by Paul-Louis Simond and was found to involve the bites of fleas whose midguts had become obstructed by replicating Y. pestis several days after feeding on an infected host. This blockage starves the fleas, drives them to aggressive feeding behaviour, and causes them to try to clear the blockage via regurgitation, resulting in thousands of plague bacteria flushing into the feeding site and infecting the host. The bubonic plague mechanism was also dependent on two populations of rodents: one resistant to the disease, which act as hosts, keeping the disease endemic, and a second that lacks resistance. When the second population dies, the fleas move on to other hosts, including people, thus creating a human epidemic.

DNA evidence

Skeletons in a mass grave from 1720 to 1721 in Martigues, near Marseille in southern France, yielded molecular evidence of the orientalis strain of Yersinia pestis, the organism responsible for bubonic plague. The second pandemic of bubonic plague was active in Europe from 1347, the beginning of the Black Death, until 1750.

Definitive confirmation of the role of Y. pestis arrived in 2010 with a publication in PLOS Pathogens by Haensch et al. They assessed the presence of DNA/RNA with polymerase chain reaction (PCR) techniques for Y. pestis from the tooth sockets in human skeletons from mass graves in northern, central and southern Europe that were associated archaeologically with the Black Death and subsequent resurgences. The authors concluded that this new research, together with prior analyses from the south of France and Germany, "ends the debate about the cause of the Black Death, and unambiguously demonstrates that Y. pestis was the causative agent of the epidemic plague that devastated Europe during the Middle Ages". In 2011 these results were further confirmed with genetic evidence derived from Black Death victims in the East Smithfield burial site in England. Schuenemann et al. concluded in 2011 "that the Black Death in medieval Europe was caused by a variant of Y. pestis that may no longer exist".

Later in 2011, Bos et al. reported in Nature the first draft genome of Y. pestis from plague victims from the same East Smithfield cemetery and indicated that the strain that caused the Black Death is ancestral to most modern strains of Y. pestis.

Later genomic papers have further confirmed the phylogenetic placement of the Y. pestis strain responsible for the Black Death as both the ancestor of later plague epidemics—including the third plague pandemic—and the descendant of the strain responsible for the Plague of Justinian. In addition, plague genomes from prehistory have been recovered.

DNA taken from 25 skeletons from 14th-century London showed that plague is a strain of Y. pestis almost identical to that which hit Madagascar in 2013. Further DNA evidence also proves the role of Y. pestis and traces the source to the Tian Shan mountains in Kyrgyzstan.

Alternative explanations

Researchers are hampered by a lack of reliable statistics from this period. Most work has been done on the spread of the disease in England, where estimates of overall population at the start of the plague vary by over 100%, as no census was undertaken in England between the time of publication of the Domesday Book of 1086 and the poll tax of the year 1377. Estimates of plague victims are usually extrapolated from figures for the clergy.

Mathematical modelling is used to match the spreading patterns and the means of transmission. In 2018 researchers suggested an alternative model in which "the disease was spread from human fleas and body lice to other people". The second model claims to better fit the trends of the plague's death toll, as the rat-flea-human hypothesis would have produced a delayed but very high spike in deaths, contradicting historical death data.

Lars Walløe argued that these authors "take it for granted that Simond's infection model, black rat → rat flea → human, which was developed to explain the spread of plague in India, is the only way an epidemic of Yersinia pestis infection could spread". Similarly, Monica Green has argued that greater attention is needed to the range of (especially non-commensal) animals that might be involved in the transmission of plague.

Archaeologist Barney Sloane has argued that there is insufficient evidence of the extinction of numerous rats in the archaeological record of the medieval waterfront in London, and that the disease spread too quickly to support the thesis that Y. pestis was spread from fleas on rats; he argues that transmission must have been person to person. This theory is supported by research in 2018 which suggested transmission was more likely by body lice and fleas during the second plague pandemic.

Summary

Academic debate continues, but no single alternative explanation for the plague's spread has achieved widespread acceptance. Many scholars arguing for Y. pestis as the major agent of the pandemic suggest that its extent and symptoms can be explained by a combination of bubonic plague with other diseases, including typhus, smallpox, and respiratory infections. In addition to the bubonic infection, others point to additional septicemic and pneumonic forms of plague, which lengthen the duration of outbreaks throughout the seasons and help account for its high mortality rate and additional recorded symptoms. In 2014, Public Health England announced the results of an examination of 25 bodies exhumed in the Clerkenwell area of London, as well as of wills registered in London during the period, which supported the pneumonic hypothesis. Currently, while osteoarcheologists have conclusively verified the presence of Y. pestis bacteria in burial sites across northern Europe through examination of bones and dental pulp, no other epidemic pathogen has been discovered to bolster the alternative explanations.

Transmission

Main article: Black Death migration

Lack of hygiene

The importance of hygiene was not recognized until the 19th century and the germ theory of disease. Until then streets were usually unhygienic, with live animals and human parasites facilitating the spread of transmissible disease.

By the early 14th century, so much filth had collected inside urban Europe that French and Italian cities were naming streets after human waste. In medieval Paris, several street names were inspired by merde, the French word for "shit". There were rue Merdeux, rue Merdelet, rue Merdusson, rue des Merdons and rue Merdiere—as well as a rue du Pipi. Pigs, cattle, chickens, geese, goats and horses roamed the streets of medieval London and Paris.

Medieval homeowners were supposed to police their housefronts, including removing animal dung, but most urbanites were careless. William E. Cosner, a resident of the London suburb of Farringdon Without, received a complaint alleging that "men could not pass for the stink . . . horse dung and horse piss." One irate Londoner complained that the runoff from the local slaughterhouse had made his garden "stinking and putrid", while another charged that the blood from slain animals flooded nearby streets and lanes, "making a foul corruption and abominable sight to all dwelling near." In much of medieval Europe, sanitation legislation consisted of an ordinance requiring homeowners to shout, "Look out below!" three times before dumping a full chamber pot into the street.

Early Christians considered bathing a temptation. With this danger in mind, St. Benedict declared, "To those who are well, and especially to the young, bathing shall seldom be permitted." St. Agnes took the injunction to heart and died without ever bathing.

Territorial origins

According to a team of medical geneticists led by Mark Achtman, Yersinia pestis "evolved in or near China" over 2,600 years ago. Later research by a team led by Galina Eroshenko placed its origins more specifically in the Tian Shan mountains on the border between Kyrgyzstan and China. However more recent research notes that the previous sampling contained East Asian bias and that sampling since then has discovered strains of Y. pestis in the Caucasus region previously thought to be restricted to China. There is also no physical or specific textual evidence of the Black Death in 14th century China. As a result, China's place in the sequence of the plague's spread is still debated to this day. According to Charles Creighton, records of epidemics in 14th-century China suggest nothing more than typhus and major Chinese outbreaks of epidemic disease post-date the European epidemic by several years. The earliest Chinese descriptions of the bubonic plague do not appear until the 1640s.

Nestorian gravesites dating from 1338 to 1339 near Issyk-Kul have inscriptions referring to plague, which has led some historians and epidemiologists to think they mark the outbreak of the epidemic; this is supported by recent direct findings of Y. pestis DNA in teeth samples from graves in the area with inscriptions referring to "pestilence" as the cause of death. Epidemics killed an estimated 25 million across Asia during the fifteen years before the Black Death reached Constantinople in 1347.

The evidence does not suggest, at least at present, that these mortality crises were caused by plague. Although some scholars, including McNeill and Cao, see the 1333 outbreak as a prelude to the outbreaks in Europe from the late 1340s to the early 1350s, scholars of the Yuan and Ming periods remain skeptical about such an interpretation. Nonetheless, the remarkably high mortality rates during the Datong mortality should discourage us from rejecting the possibility of localized/regional outbreaks of plague in different parts of China, albeit differing in scale from, and unrelated to, the pandemic mortality of the Black Death. What we lack is any indication of a plague pandemic that engulfed vast territories of the Yuan Empire and later moved into western Eurasia through Central Asia.

— Philip Slavin

According to John Norris, evidence from Issyk-Kul indicates a small sporadic outbreak characteristic of transmission from rodents to humans with no wide-scale impact. According to Achtman, the dating of the plague suggests that it was not carried along the Silk Road, and its widespread appearance in that region probably postdates the European outbreak. Additionally, the Silk Road had already been heavily disrupted before the spread of the Black Death; Western and Middle Eastern traders found it difficult to trade on the Silk Road by 1325 and impossible by 1340, making its role in the spread of plague less likely. There are no records of the symptoms of the Black Death from Mongol sources or writings from travelers east of the Black Sea prior to the Crimean outbreak in 1346.

Others still favor an origin in China. The theory of Chinese origin implicates the Silk Road, the disease possibly spreading alongside Mongol armies and traders, or possibly arriving via ship—however, this theory is still contested. It is speculated that rats aboard Zheng He's ships in the 15th century may have carried the plague to Southeast Asia, India, and Africa.

Research on the Delhi Sultanate and the Yuan dynasty shows no evidence of any serious epidemic in fourteenth-century India and no specific evidence of plague in 14th-century China, suggesting that the Black Death may not have reached these regions. Ole Benedictow argues that since the first clear reports of the Black Death come from Kaffa, the Black Death most likely originated in the nearby plague focus on the northwestern shore of the Caspian Sea.

Demographic historians estimate that China's population fell by at least 15 per cent, and perhaps as much as a third, between 1340 and 1370. This population loss coincided with the Black Death that ravaged Europe and much of the Islamic world in 1347–52. However, there is a conspicuous lack of evidence for pandemic disease on the scale of the Black Death in China at this time. War and famine – and the diseases that typically accompanied them – probably were the main causes of mortality in the final decades of Mongol rule.

— Richard von Glahn

Monica Green suggests that other parts of Eurasia outside the west do not contain the same evidence of the Black Death, because there were actually four strains of Yersinia pestis that became predominant in different parts of the world. Mongol records of illness such as food poisoning may have been referring to the Black Death. Another theory is that the plague originated near Europe and cycled through the Mediterranean, Northern Europe and Russia before making its way to China. Other historians, such as John Norris and Ole Benedictaw, believe the plague likely originated in Europe or the Middle East, and never reached China. Norris specifically argues for an origin in Kurdistan rather than Central Asia.

European outbreak

The seventh year after it began, it came to England and first began in the towns and ports joining on the seacoasts, in Dorsetshire, where, as in other counties, it made the country quite void of inhabitants so that there were almost none left alive. ... But at length it came to Gloucester, yea even to Oxford and to London, and finally it spread over all England and so wasted the people that scarce the tenth person of any sort was left alive.

Geoffrey the Baker, Chronicon Angliae

Plague was reportedly first introduced to Europe via Genoese traders from their port city of Kaffa in the Crimea in 1347. During a protracted siege of the city in 1345–1346, the Mongol Golden Horde army of Jani Beg—whose mainly Tatar troops were suffering from the disease—catapulted infected corpses over the city walls of Kaffa to infect the inhabitants, though it is also likely that infected rats travelled across the siege lines to spread the epidemic to the inhabitants. As the disease took hold, Genoese traders fled across the Black Sea to Constantinople, where the disease first arrived in Europe in summer 1347.

The epidemic there killed the 13-year-old son of the Byzantine emperor, John VI Kantakouzenos, who wrote a description of the disease modelled on Thucydides's account of the 5th century BCE Plague of Athens, noting the spread of the Black Death by ship between maritime cities. Nicephorus Gregoras, while writing to Demetrios Kydones, described the rising death toll, the futility of medicine, and the panic of the citizens. The first outbreak in Constantinople lasted a year, but the disease recurred ten times before 1400.

Carried by twelve Genoese galleys, plague arrived by ship in Sicily in October 1347; the disease spread rapidly all over the island. Galleys from Kaffa reached Genoa and Venice in January 1348, but it was the outbreak in Pisa a few weeks later that was the entry point into northern Italy. Towards the end of January, one of the galleys expelled from Italy arrived in Marseilles.

From Italy, the disease spread northwest across Europe, striking France, Spain, Portugal, and England by June 1348, then spreading east and north through Germany, Scotland and Scandinavia from 1348 to 1350. It was introduced into Norway in 1349 when a ship landed at Askøy, then spread to Bjørgvin (modern Bergen). Finally, it spread to northern Russia in 1352 and reached Moscow in 1353. Plague was less common in parts of Europe with less-established trade relations, including the majority of the Basque Country, isolated parts of Belgium and the Netherlands, and isolated Alpine villages throughout the continent.

According to some epidemiologists, periods of unfavorable weather decimated plague-infected rodent populations, forcing their fleas onto alternative hosts, inducing plague outbreaks which often peaked in the hot summers of the Mediterranean and during the cool autumn months of the southern Baltic region. Among many other culprits of plague contagiousness, pre-existing malnutrition weakened the immune response, contributing to an immense decline in European population.

West Asian and North African outbreak

The disease struck various regions in the Middle East and North Africa during the pandemic, leading to serious depopulation and permanent change in both economic and social structures.

By autumn 1347, plague had reached Alexandria in Egypt, transmitted by sea from Constantinople via a single merchant ship carrying slaves. By late summer 1348, it reached Cairo, capital of the Mamluk Sultanate, cultural center of the Islamic world, and the largest city in the Mediterranean Basin; the Bahriyya child sultan an-Nasir Hasan fled and more than a third of the 600,000 residents died. The Nile was choked with corpses despite Cairo having a medieval hospital, the late 13th-century bimaristan of the Qalawun complex. The historian al-Maqrizi described the abundant work for grave-diggers and practitioners of funeral rites; plague recurred in Cairo more than fifty times over the following one and a half centuries.

During 1347, the disease travelled eastward to Gaza by April; by July it had reached Damascus, and in October plague had broken out in Aleppo. That year, in the territory of modern Lebanon, Syria, Israel, and Palestine, the cities of Ascalon, Acre, Jerusalem, Sidon, and Homs were all infected. In 1348–1349, the disease reached Antioch. The city's residents fled to the north, but most of them ended up dying during the journey. Within two years, the plague had spread throughout the Islamic world, from Arabia across North Africa.

The pandemic spread westwards from Alexandria along the African coast, while in April 1348 Tunis was infected by ship from Sicily. Tunis was then under attack by an army from Morocco; this army dispersed in 1348 and brought the contagion with them to Morocco, whose epidemic may also have been seeded from the Islamic city of Almería in al-Andalus.

Mecca became infected in 1348 by pilgrims performing the Hajj. In 1351 or 1352, the Rasulid sultan of the Yemen, al-Mujahid Ali, was released from Mamluk captivity in Egypt and carried plague with him on his return home. During 1349, records show the city of Mosul suffered a massive epidemic, and the city of Baghdad experienced a second round of the disease.

Signs and symptoms

A hand showing how acral gangrene of the fingers due to bubonic plague causes the skin and flesh to die and turn black
An inguinal bubo on the upper thigh of a person infected with bubonic plague. Swollen lymph nodes (buboes) often occur in the neck, armpit and groin (inguinal) regions of plague victims.

Bubonic plague

Symptoms of the plague include fever of 38–41 °C (100–106 °F), headaches, painful aching joints, nausea and vomiting, and a general feeling of malaise. Left untreated, 80% of victims die within eight days.

Contemporary accounts of the pandemic are varied and often imprecise. The most commonly noted symptom was the appearance of buboes (or gavocciolos) in the groin, neck and armpits, which oozed pus and bled when opened. Boccaccio's description:

In men and women alike it first betrayed itself by the emergence of certain tumours in the groin or armpits, some of which grew as large as a common apple, others as an egg ... From the two said parts of the body this deadly gavocciolo soon began to propagate and spread itself in all directions indifferently; after which the form of the malady began to change, black spots or livid making their appearance in many cases on the arm or the thigh or elsewhere, now few and large, now minute and numerous. As the gavocciolo had been and still was an infallible token of approaching death, such also were these spots on whomsoever they showed themselves.

This was followed by acute fever and vomiting of blood. Most people died two to seven days after initial infection. Freckle-like spots and rashes, which may have been caused by flea-bites, were identified as another potential sign of plague.

Pneumonic plague

Lodewijk Heyligen, whose master Cardinal Giovanni Colonna died of plague in 1348, noted a distinct form of the disease, pneumonic plague, that infected the lungs and led to respiratory problems. Symptoms include fever, cough and blood-tinged sputum. As the disease progresses, sputum becomes free-flowing and bright red. Pneumonic plague has a mortality rate of 90–95%.

Septicemic plague

Septicemic plague is the least common of the three forms, with an untreated mortality rate near 100%. Symptoms are high fevers and purple skin patches (purpura due to disseminated intravascular coagulation). In cases of pneumonic and particularly septicemic plague, the progress of the disease is so rapid that there would often be no time for the development of the enlarged lymph nodes that were noted as buboes.

Consequences

Main article: Consequences of the Black Death

Deaths

Inspired by the Black Death, The Dance of Death, or Danse Macabre, an allegory on the universality of death, was a common painting motif in the late medieval period.

There are no exact figures for the death toll; the rate varied widely by locality. Urban centers with higher populations suffered longer periods of abnormal mortality. Some estimate that it may have killed between 75,000,000 and 200,000,000 people in Eurasia. A study published in 2022 of pollen samples across Europe from 1250 to 1450 was used to estimate changes in agricultural output before and after the Black Death. The authors found great variability in different regions, with evidence for high mortality in areas of Scandinavia, France, western Germany, Greece, and central Italy, but uninterrupted agricultural growth in central and eastern Europe, Iberia, and Ireland. The authors concluded that "the pandemic was immensely destructive in some areas, but in others it had a far lighter touch ... invalidates histories of the Black Death that assume Y. pestis was uniformly prevalent, or nearly so, across Europe and that the pandemic had a devastating demographic impact everywhere."

The Black Death killed, by various estimations, from 25 to 60% of Europe's population. Robert Gottfried writes that as early as 1351, "agents for Pope Clement VI calculated the number of dead in Christian Europe at 23,840,000. With a preplague population of about 75 million, Clement's figure accounts for mortality of 31%-a rate about midway between the 50% mortality estimated for East Anglia, Tuscany, and parts of Scandinavia, and the less-than-15% morbidity for Bohemia and Galicia. And it is unerringly close to Froissart's claim that "a third of the world died," a measurement probably drawn from St. John's figure of mortality from plague in the Book of Revelation, a favorite medieval source of information." Ole J. Benedictow proposes 60% mortality rate for Europe as a whole based on available data, with up to 80% based on poor nutritional conditions in the 14th century. According to medieval historian Philip Daileader, it is likely that over four years, 45–50% of the European population died of plague.

The overwhelming number of deaths in Europe sometimes made mass burials necessary, and some sites had hundreds or thousands of bodies. The mass burial sites that have been excavated have allowed archaeologists to continue interpreting and defining the biological, sociological, historical, and anthropological implications of the Black Death. The mortality rate of the Black Death in the 14th century was far greater than the worst 20th-century outbreaks of Y. pestis plague, which occurred in India and killed as much as 3% of the population of certain cities.

In 1348, the disease spread so rapidly that nearly a third of the European population perished before any physicians or government authorities had time to reflect upon its origins. In crowded cities, it was not uncommon for as much as 50% of the population to die. Half of Paris' population of 100,000 people died. In Italy, the population of Florence was reduced from between 110,000 and 120,000 inhabitants in 1338 to 50,000 in 1351. At least 60% of the population of Hamburg and Bremen perished, and a similar percentage of Londoners may have died from the disease as well, leaving a death toll of approximately 62,000 between 1346 and 1353. Florence's tax records suggest that 80% of the city's population died within four months in 1348. Before 1350, there were about 170,000 settlements in Germany, and this was reduced by nearly 40,000 by 1450. The disease bypassed some areas, with the most isolated areas being less vulnerable to contagion. Plague did not appear in Flanders until the turn of the 15th century, and the impact was less severe on the populations of Hainaut, Finland, northern Germany, and areas of Poland. Monks, nuns, and priests were especially hard-hit since they cared for people ill with the plague. The level of mortality in the rest of Eastern Europe was likely similar to that of Western Europe in the first outbreak, with descriptions suggesting a similar effect on Russian towns, and the cycles of plague in Russia being roughly equivalent.

Citizens of Tournai bury plague victims

In 1382, the physician to the Avignon Papacy, Raimundo Chalmel de Vinario (Latin: Magister Raimundus, lit.'Master Raymond'), observed the decreasing mortality rate of successive outbreaks of plague in 1347–1348, 1362, 1371 and 1382 in his treatise On Epidemics (De epidemica). In the first outbreak, two thirds of the population contracted the illness and most patients died; in the next, half the population became ill but only some died; by the third, a tenth were affected and many survived; while by the fourth occurrence, only one in twenty people were sickened and most of them survived. By the 1380s in Europe, the plague predominantly affected children. Chalmel de Vinario recognised that bloodletting was ineffective (though he continued to prescribe bleeding for members of the Roman Curia, whom he disliked), and said that all true cases of plague were caused by astrological factors and were incurable; he was never able to effect a cure.

The populations of some Italian cities, notably Florence, did not regain their pre-14th century size until the 19th century. Italian chronicler Agnolo di Tura recorded his experience from Siena, where plague arrived in May 1348:

Father abandoned child, wife husband, one brother another; for this illness seemed to strike through the breath and sight. And so they died. And none could be found to bury the dead for money or friendship. Members of a household brought their dead to a ditch as best they could, without priest, without divine offices ... great pits were dug and piled deep with the multitude of dead. And they died by the hundreds both day and night ... And as soon as those ditches were filled more were dug ... And I, Agnolo di Tura ... buried my five children with my own hands. And there were also those who were so sparsely covered with earth that the dogs dragged them forth and devoured many bodies throughout the city. There was no one who wept for any death, for all awaited death. And so many died that all believed it was the end of the world.

The most widely accepted estimate for the Middle East, including Iraq, Iran, and Syria, during this time, is for a death toll of about a third of the population. The Black Death killed about 40% of Egypt's population. In Cairo, with a population numbering as many as 600,000, and possibly the largest city west of China, between one third and 40% of the inhabitants died within eight months. By the 18th century, the population of Cairo was halved from its numbers in 1347.

Economic

It has been suggested that the Black Death, like other outbreaks through history, disproportionately affected the poorest people and those already in worse physical condition than the wealthier citizens.

But along with population decline from the pandemic, wages soared in response to a subsequent labour shortage. In some places rents collapsed (e.g., lettings "used to bring in £5, and now but £1.")

However, many labourers, artisans, and craftsmen—those living from money-wages alone—suffered a reduction in real incomes owing to rampant inflation. Landowners were also pushed to substitute monetary rents for labour services in an effort to keep tenants. Taxes and tithes became difficult to collect, with living poor refusing to cover the share of the rich deceased, because many properties were empty and unfarmed, and because tax-collectors, where they could be employed, refused to go to plague spots.

The trade disruptions in the Mongol Empire caused by the Black Death was one of the reasons for its collapse.

Environmental

A study performed by Thomas Van Hoof of the Utrecht University suggests that the innumerable deaths brought on by the pandemic cooled the climate by freeing up land and triggering reforestation. This may have led to the Little Ice Age.

Persecutions

See also: Persecution of Jews during the Black Death
Jews being burned at the stake in 1349. Miniature from a 14th-century manuscript Antiquitates Flandriae by Gilles Li Muisis

Renewed religious fervor and fanaticism increased in the wake of the Black Death. Some Europeans targeted "various groups such as Jews, friars, foreigners, beggars, pilgrims", lepers, and Romani, blaming them for the crisis. Lepers, and others with skin diseases such as acne or psoriasis, were killed throughout Europe.

Because 14th-century healers and governments were at a loss to explain or stop the disease, Europeans turned to astrological forces, earthquakes and the poisoning of wells by Jews as possible reasons for outbreaks. Many believed the epidemic was a punishment by God for their sins, and could be relieved by winning God's forgiveness.

There were many attacks against Jewish communities. In the Strasbourg massacre of February 1349, about 2,000 Jews were murdered. In August 1349, the Jewish communities in Mainz and Cologne were annihilated. By 1351, 60 major and 150 smaller Jewish communities had been destroyed. During this period many Jews relocated to Poland, where they received a welcome from King Casimir the Great.

Social

See also: Black Death in medieval culture
Pieter Bruegel's The Triumph of Death reflects the social upheaval and terror that followed the plague, which devastated medieval Europe.

One theory that has been advanced is that the Black Death's devastation of Florence, between 1348 and 1350, resulted in a shift in the world view of people in 14th-century Italy that ultimately led to the Renaissance. Italy was particularly badly hit by the pandemic, and the resulting familiarity with death may have caused thinkers to dwell more on their lives on Earth, rather than on spirituality and the afterlife. It has also been argued that the Black Death prompted a new wave of piety, manifested in the sponsorship of religious works of art.

This does not fully explain why the Renaissance occurred in Italy in the 14th century; the Renaissance's emergence was most likely the result of the complex interaction of the above factors, in combination with an influx of Greek scholars after the fall of the Byzantine Empire. As a result of the drastic reduction in the populace the value of the working class increased, and commoners came to enjoy more freedom. To answer the increased need for labour, workers travelled in search of the most favorable position economically.

Prior to the emergence of the Black Death, the continent was considered a feudalistic society, composed of fiefs and city-states frequently managed by the Catholic Church. The pandemic completely restructured both religion and political forces; survivors began to turn to other forms of spirituality and the power dynamics of the fiefs and city-states crumbled. The survivors of the pandemic found not only that the prices of food were lower but also that lands were more abundant, and many of them inherited property from their dead relatives, and this probably contributed to the destabilization of feudalism.

The word "quarantine" has its roots in this period, though the practice of isolating people to prevent the spread of disease is older. In the city-state of Ragusa (modern Dubrovnik, Croatia), a thirty-day isolation period was implemented in 1377 for new arrivals to the city from plague-affected areas. The isolation period was later extended to forty days, and given the name "quarantino" from the Italian word for "forty".

All institutions were affected. Smaller monasteries and convents became unviable and closed. Up to half parish churches lost their priest, apart from the parishioners. Religious sensibilities changed:

"looking back into the past, the history of the Church during the Middle Ages in England appears one continuous and stately progress. It is much nearer to the truth to say that in 1351 the whole ecclesiastical system was wholly disorganised, or, indeed, more than half ruined, and that everything had to be built up anew. To secure the most necessary public ministrations of the rites of religion the most inadequately-prepared subjects had to be accepted, and even these could be obtained only in insufficient numbers.The immediate effect on the people was a religious paralysis. Instead of turning men to God the scourge turned them to despair In time the religious sense and feeling revived, but in many respects it took a new tone, and its manifestations ran in new channelscharacterised by a devotional and more self-reflective cast than previously.
The new religious spirit found outward expression in the multitude of guilds which sprang into existence at this time, in the remarkable and almost, as it may seem to some, extravagant development of certain pious practices, in the singular spread of a more personal devotion to the Blessed Sacrament, to the Blessed Virgin, to the Five Wounds, to the Holy Name, and other such manifestations of a more tender or more familiar piety.At the close of the fourteenth century and during the course of the fifteenth the supply of ornaments, furniture, plate, statues painted or in highly decked "coats," with which the churches were literally encumbered as time went on, proved a striking contrast to the comparative simplicity which characterised former days, as witnessed by a comparison of inventories.
In fact, the fifteenth century witnessed the beginnings of a great middle-class movement, which can be distinctly traced to the effect of the great pestilence

— Cardinal Francis Aidan Gasquet

Recurrences

Second plague pandemic

Main article: Second plague pandemic
The Great Plague of London, in 1665, killed up to 100,000 people.
A plague doctor and his typical apparel during the 17th-century outbreak

The plague repeatedly returned to haunt Europe and the Mediterranean throughout the 14th to 17th centuries. According to Jean-Noël Biraben, the plague was present somewhere in Europe in every year between 1346 and 1671 (although some researchers have cautions about the uncritical use of Biraben's data). The second pandemic was particularly widespread in the following years: 1360–1363; 1374; 1400; 1438–1439; 1456–1457; 1464–1466; 1481–1485; 1500–1503; 1518–1531; 1544–1548; 1563–1566; 1573–1588; 1596–1599; 1602–1611; 1623–1640; 1644–1654; and 1664–1667. Subsequent outbreaks, though severe, marked the plague's retreat from most of Europe (18th century) and North Africa (19th century).

Historian George Sussman argued that the plague had not occurred in East Africa until the 20th century. However, other sources suggest that the second pandemic did indeed reach sub-Saharan Africa.

According to historian Geoffrey Parker, "France alone lost almost a million people to the plague in the epidemic of 1628–31." In the first half of the 17th century, a plague killed some 1.7 million people in Italy. More than 1.25 million deaths resulted from the extreme incidence of plague in 17th-century Spain.

The Black Death ravaged much of the Islamic world. Plague could be found in the Islamic world almost every year between 1500 and 1850. Sometimes the outbreaks affected small areas, while other outbreaks affected multiple regions. Plague repeatedly struck the cities of North Africa. Algiers lost 30,000–50,000 inhabitants to it in 1620–1621, and again in 1654–1657, 1665, 1691, and 1740–1742. Cairo suffered more than fifty plague epidemics within 150 years from the plague's first appearance, with the final outbreak of the second pandemic there in the 1840s. Plague remained a major event in Ottoman society until the second quarter of the 19th century. Between 1701 and 1750, thirty-seven larger and smaller epidemics were recorded in Constantinople, and an additional thirty-one between 1751 and 1800. Baghdad has suffered severely from visitations of the plague, and sometimes two-thirds of its population died.

Third plague pandemic

Main article: Third plague pandemic
Worldwide distribution of plague-infected animals, 1998

The third plague pandemic (1855–1859) started in China in the mid-19th century, spreading to all inhabited continents and killing 10 million people in India alone. The investigation of the pathogen that caused the 19th-century plague was begun by teams of scientists who visited Hong Kong in 1894, among whom was the French-Swiss bacteriologist Alexandre Yersin, for whom the pathogen was named.

Twelve plague outbreaks in Australia between 1900 and 1925 resulted in over 1,000 deaths, chiefly in Sydney. This led to the establishment of a Public Health Department there which undertook some leading-edge research on plague transmission from rat fleas to humans via the bacillus Yersinia pestis.

The first North American plague epidemic was the San Francisco plague of 1900–1904, followed by another outbreak in 1907–1908.

Modern-day

Modern treatment methods include insecticides, the use of antibiotics, and a plague vaccine. It is feared that the plague bacterium could develop drug resistance and again become a major health threat. One case of a drug-resistant form of the bacterium was found in Madagascar in 1995. Another outbreak in Madagascar was reported in November 2014. In October 2017, the deadliest outbreak of the plague in modern times hit Madagascar, killing 170 people and infecting thousands.

An estimate of the case fatality rate for the modern plague, after the introduction of antibiotics, is 11%, although it may be higher in underdeveloped regions.

See also

Footnotes

  1. Declining temperatures following the end of the Medieval Warm Period added to the crisis.
  2. He was able to adopt the epidemiology of the bubonic plague for the Black Death for the second edition in 1908, implicating rats and fleas in the process, and his interpretation was widely accepted for other ancient and medieval epidemics, such as the Plague of Justinian that was prevalent in the Eastern Roman Empire from 541 to 700 CE.
  3. In 1998, Drancourt et al. reported the detection of Y. pestis DNA in human dental pulp from a medieval grave. Another team led by Tom Gilbert cast doubt on this identification and the techniques employed, stating that this method "does not allow us to confirm the identification of Y. pestis as the aetiological agent of the Black Death and subsequent plagues. In addition, the utility of the published tooth-based ancient DNA technique used to diagnose fatal bacteraemias in historical epidemics still awaits independent corroboration".
  4. However, other researchers do not think that plague ever became endemic in Europe or its rat population. The disease repeatedly wiped out the rodent carriers, so that the fleas died out until a new outbreak from Central Asia repeated the process. The outbreaks have been shown to occur roughly 15 years after a warmer and wetter period in areas where plague is endemic in other species, such as gerbils.
  5. In Britain "the special symptoms characteristic of the plague of 1348–9 were four in number:— (1) Gangrenous inflammation of the throat and lungs; (2) Violent pains in the region of the chest; (3) The vomiting and spitting of blood; and (4) The pestilential odour coming from the bodies and breath of the sick."
  6. The only medical detail that is questionable in Boccaccio's description is that the gavocciolo was an "infallible token of approaching death", as, if the bubo discharges, recovery is possible.
  7. Norwegian historian Ole Benedictow suggests:

    Detailed study of the mortality data available points to two conspicuous features in relation to the mortality caused by the Black Death: namely the extreme level of mortality caused by the Black Death, and the remarkable similarity or consistency of the level of mortality, from Spain in southern Europe to England in north-western Europe. The data is sufficiently widespread and numerous to make it likely that the Black Death swept away around 60% of Europe's population. The generally assumed population of Europe at the time is about 80 million, implying that around 50 million people died in the Black Death.

  8. According to medieval historian Philip Daileader,

    The trend of recent research is pointing to a figure more like 45–50% of the European population dying during a four-year period. There is a fair amount of geographic variation. In Mediterranean Europe, areas such as Italy, the south of France and Spain, where plague ran for about four years consecutively, it was probably closer to 75–80% of the population. In Germany and England ... it was probably closer to 20%.

  9. While contemporary accounts report mass burial pits being created in response to the large number of dead, recent scientific investigations of a burial pit in Central London found well-preserved individuals to be buried in isolated, evenly spaced graves, suggesting at least some pre-planning and Christian burials at this time.
  10. The Black Death caused greater upheaval to Florence's social and political structure than later epidemics. Despite a significant number of deaths among members of the ruling classes, the government of Florence continued to function during this period. Formal meetings of elected representatives were suspended during the height of the epidemic due to the chaotic conditions in the city, but a small group of officials was appointed to conduct the affairs of the city, which ensured continuity of government.

Citations

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  2. Sources for deaths: Aberth 2021, p. 1; Benedictow 2021, pp. 869–877; Christakos et al. 2005
  3. "Economic life after Covid-19: Lessons from the Black Death". The Economic Times. 29 March 2020. Archived from the original on 21 June 2020. Retrieved 4 April 2020.
  4. ^ Haensch et al. 2010.
  5. "Plague". World Health Organization. October 2017. Archived from the original on 24 April 2015. Retrieved 8 November 2017.
  6. Firth J (April 2012). "The History of Plague – Part 1. The Three Great Pandemics". jmvh.org. Archived from the original on 2 October 2019. Retrieved 14 November 2019.
  7. Sources for origins
  8. Susat, Julian; et al. (29 June 2021). "A 5,000-year-old hunter-gatherer already plagued by Yersinia pestis". Cell Reports. 35 (13). doi:10.1016/j.celrep.2021.109278. PMID 34192537.
  9. Spyrou, Maria A; et al. (2018). "Analysis of 3800-year-old Yersinia pestis genomes suggests Bronze Age origin for bubonic plague". Nature Communications. 9 (1): 2234. Bibcode:2018NatCo...9.2234S. doi:10.1038/s41467-018-04550-9. PMC 5993720. PMID 29884871.
  10. Wade, Nicholas (31 October 2010). "Europe's Plagues Came from China, Study Finds". The New York Times. Archived from the original on 4 November 2010. Retrieved 24 February 2017.
  11. ^ Sussman 2011, p. 354.
  12. "Black Death | Causes, Facts, and Consequences". Encyclopædia Britannica. Archived from the original on 9 July 2019. Retrieved 1 August 2019.
  13. Snowden 2019, pp. 49–53.
  14. "Plague". www.who.int. Archived from the original on 30 April 2018. Retrieved 23 July 2024.
  15. McCoy, Terrence (26 October 2021). "Everything you know about the Black Death is wrong". Washington Post. ISSN 0190-8286. Archived from the original on 27 August 2016. Retrieved 23 July 2024.
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  17. ^ Spyrou, Maria A.; Musralina, Lyazzat; Gnecchi Ruscone, Guido A.; Kocher, Arthur; Borbone, Pier-Giorgio; Khartanovich, Valeri I.; Buzhilova, Alexandra; Djansugurova, Leyla; Bos, Kirsten I.; Kühnert, Denise; Haak, Wolfgang (15 June 2022). "The source of the Black Death in fourteenth-century central Eurasia". Nature. 606 (7915): 718–724. Bibcode:2022Natur.606..718S. doi:10.1038/s41586-022-04800-3. ISSN 1476-4687. PMC 9217749. PMID 35705810. S2CID 249709693.
  18. Aberth 2010, pp. 9–13.
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