Scientists have discovered the oldest known evidence of the plague, dating back over 5,500 years in Siberia, significantly earlier than previously believed. This groundbreaking finding was published on July 4, 2026, and highlights the disease's long history among humans, which includes devastating outbreaks such as the Black Death in the 14th century.
Ancient Plague Evidence Found in Siberia
Researchers from the University of Copenhagen, led by Eske Willerslev, analyzed remains from four cemeteries near Lake Baikal. They identified traces of plague-causing bacteria in the teeth of 18 ancient hunter-gatherers. This discovery suggests that the plague triggered two outbreaks, with initial cases occurring around 5,500 years ago.
Willerslev stated, "To understand our own history, we believe that understanding the history of plague is extremely important." The findings provide crucial insights into how the disease evolved and its impact on early human populations.
Transmission and Impact of the Prehistoric Plague
The research indicates that the prehistoric plague developed in stages and primarily affected small family groups. It likely spread through consumption of infected animals, such as marmots, and human interactions, including coughing and sneezing. Many of the victims were young children, aged 8 to 11, which raises concerns about their immune responses.
