Hunter-gatherer cemeteries reveal an ancient plague’s earliest known victims

Live updates

1. 2d ago

   Plague victims found in 5,500-year-old Siberian hunter-gatherer graves

   Ancient DNA from skeletons near Lake Baikal reveals the presence of Yersinia pestis bacteria. This evidence shows the plague was lethal over 5,500 years ago. The discovery challenges previous theories that the disease required crowded cities or farming to spread.

   What's confirmed:

   • Plague infected hunter-gatherer communities near Lake Baikal more than 5,500 years ago.
   • The disease existed before the development of farming and crowded settlements.
   • DNA from ancient skeletons in Siberia contains Yersinia pestis bacteria.
   confidence 100%
2. 3d ago

   Ancient DNA reveals oldest known plague victims in Siberia

   Plague killed people in small hunter-gatherer communities near Lake Baikal more than 5,500 years ago. This evidence shows the disease was deadly long before the emergence of cities or farming.

   What's confirmed:

   • A plague outbreak occurred among Siberian hunter-gatherers more than 5,500 years ago.
   • The disease killed people before the rise of medieval cities or crowded streets.
   confidence 100%
3. 3d ago

   Siberian Hunter-Gatherer Cemeteries Reveal Plague Outbreaks 5,500 Years Ago

   Researchers found early plague strains in hunter-gatherer cemeteries near Lake Baikal in southeast Siberia. These outbreaks occurred about 5,500 years ago and caused acute mortality, particularly among children. The findings show the disease killed humans long before the rise of cities and farming.

   What's confirmed:

   • Plague outbreaks occurred among hunter-gatherers near Lake Baikal approximately 5,500 years ago.
   • The bacteria Yersinia pestis caused these infections.
   • Plague was detected in nearly 40% of the individuals studied across four cemeteries.
   • The disease caused acute mortality, specifically affecting children aged 8 to 11 years.
   • Outbreaks spread within small familial groups, indicating human-to-human transmission.
   • These outbreaks predated the development of cities and agriculture.

   Still unconfirmed:

   • The plague strain is linked to raw marmots as a potential reservoir.
   confidence 100%
4. 3d ago

   5,500-Year-Old Siberian Graves Reveal Plague’s Earliest Human Victims

   DNA analysis of hunter-gatherer cemeteries near Lake Baikal confirms the oldest known plague outbreak struck mobile communities 5,500 years ago, predating agriculture and cities. Young children were disproportionately affected, with genetic evidence linking the strain to raw marmots as a potential reservoir. The discovery challenges long-held assumptions about plague’s origins and spread.

   What's confirmed:

   • A plague outbreak killed hunter-gatherers in Siberia 5,500 years ago, the earliest confirmed human cases of the disease.
   • DNA from prehistoric graves near Lake Baikal shows the plague strain targeted young children, with genetic markers suggesting heightened lethality in that age group.
   • The outbreak predates the rise of agriculture and large settlements, contradicting the idea that plague required urban environments to spread.
   • Genetic analysis links the ancient strain to *Yersinia pestis*, the bacterium responsible for later pandemics, including the Black Death.
   • Raw marmots are suspected as a reservoir for the plague strain, based on genetic similarities to modern marmot-borne plague variants.
   • The discovery was made through skeletal remains excavated from hunter-gatherer cemeteries, with consistent findings across multiple independent studies.

   Still unconfirmed:

   • The plague strain may have carried a gene making it particularly deadly for children, though this claim requires further validation beyond initial reports.
   • The outbreak could have been transmitted through contact with infected marmot carcasses, but direct evidence of this transmission pathway remains unconfirmed.
   confidence 97%