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  • The oldest strain of Yersinia pestis has been found

    From SolomonW@21:1/5 to All on Sat Jul 31 20:00:30 2021
    https://phys.org/news/2021-06-year-old-earliest-strain-plague.html

    Y. pestis is assumed here to come about 7,000 years ago from Yersinia pseudotuberculosis. Its believed that fleas could not spread this ancient strain.

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