Oldest evidence of a plague outbreak found in prehistoric graves, rewriting the disease’s history

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1. 3d ago

   Oldest Plague Evidence Found in Siberian Hunter-Gatherer Graves

   Ancient DNA from Siberian cemeteries reveals plague outbreaks occurred 5,500 years ago. This evidence shows the disease killed humans long before the rise of cities and farming. The outbreaks were rapid and specifically targeted children and young teenagers.

   What's confirmed:

   • Plague evidence dates back approximately 5,500 years ago.
   • The disease existed before the development of agriculture, urban settlements, or cities.
   • Ancient DNA from Siberian hunter-gatherer cemeteries shows early plague strains in nearly 40% of individuals.
   • Rapid family-based outbreaks killed many children and young teenagers.

   Still unconfirmed:

   • The plague appeared 200 years earlier than previously thought.
   confidence 90%
2. 4d ago

   Prehistoric Siberia holds oldest plague evidence, pushing outbreak timeline back 5,500 years

   Scientists have identified the earliest known plague outbreak in hunter-gatherer graves near Lake Baikal, Siberia, dating to roughly 5,500 years ago. The discovery predates the Justinian Plague by 4,000 years and suggests the bacterium Yersinia pestis infected humans long before agriculture or urban settlements. Young children appear to have been disproportionately affected. Researchers confirm the strain likely originated from marmots.

   What's confirmed:

   • Ancient DNA from hunter-gatherer graves near Lake Baikal, Siberia, confirms a plague outbreak dating to approximately 5,500 years ago.
   • The bacterium identified is Yersinia pestis, the same pathogen responsible for later pandemics including the Black Death.
   • Genetic analysis shows the strain likely jumped from marmots to humans, marking one of the earliest recorded zoonotic transmissions.
   • Children under five years old were among the hardest-hit groups in the prehistoric outbreak.
   • The discovery predates the Justinian Plague by nearly 4,000 years, reshaping understanding of plague’s evolutionary history.
   • Samples were taken from four hunter-gatherer cemeteries in the Lake Baikal region, with genetic material recovered from teeth and skeletal remains.

   Still unconfirmed:

   • The outbreak may provide clues about future pathogen emergence, though this link remains speculative.
   • Some reports suggest the strain could be linked to modern plague variants, but no genetic comparison has been confirmed.
   confidence 96%