8 years ago
New historical genome analysis shows the same strain of plague kept popping up across at least 3 centuries
DNA from Yersinia pestis, the bacteria that causes the plague, was extracted and compared from the teeth of 20 ancient human skeletons who died during three pandemics (the first from the 6th-8th centuries; the second spanning the 14th-18th centuries; and the third starting in the 19th century to present day).
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http://biorxiv.org
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