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Ancient DNA Solves Mystery Over Origin of Medieval Black Death

Published by admin on June 19, 2022

Ancient DNA from bubonic plague victims buried in cemeteries on the old Silk Road trade route in Central Asia has helped solve an enduring mystery, pinpointing an area in northern Kyrgyzstan as the launching point for the Black Death that killed tens of millions of people in the mid-14th century. The Black Death was the deadliest pandemic on record. It may have killed 50% to 60% of the population in parts of Western Europe and 50% in the Middle East, combining for about 50-60 million deaths, Slavin said. An “unaccountable number” of people also died in the Caucasus, Iran and Central Asia, Slavin added. Researchers said on Wednesday they retrieved ancient DNA traces of the Yersinia pestis plague bacterium from the teeth of three women buried in a medieval Nestorian Christian community in the Chu Valley near Lake Issyk Kul in the foothills of the Tian Shan mountains who perished in 1338-1339. The earliest deaths documented elsewhere in the pandemic were in 1346. Reconstructing the pathogen’s genome showed that this strain not only gave rise to the one that caused the Black Death that mauled Europe, Asia, the Middle East and North Africa but also to most plague strains existing today. “Our finding that the Black Death originated in Central Asia in the 1330s puts centuries-old debates to rest,” said historian Philip Slavin of the University of Stirling in Scotland, co-author of the study published in the journal Nature.

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