AI Insight
Researchers analyzing ancient DNA from Siberian hunter-gatherer burial sites have discovered plague strains dating back 5,500 years, predating the development of cities and agriculture traditionally associated with plague outbreaks. Nearly 40% of individuals examined showed evidence of plague infection, with patterns suggesting rapid transmission within family groups that particularly affected children and young teenagers. This finding pushes back the timeline of plague as a significant human pathogen by thousands of years.
Why it matters
This discovery fundamentally changes our understanding of plague's evolutionary history and its impact on prehistoric human populations. It demonstrates that deadly infectious diseases were shaping human societies even before the development of dense urban settlements, challenging assumptions about the environmental conditions necessary for plague transmission.
Plague was already a deadly killer 5,500 years ago, long before cities, farming, or the rat-infested conditions usually linked to historic outbreaks. By analyzing ancient DNA from hunter-gatherer cemeteries in Siberia, researchers discovered early plague strains in nearly 40% of the individuals studied and found evidence of rapid family-based outbreaks that wiped out many children and young teenagers.
Source: Ancient DNA reveals plague was already killing humans 5,500 years ago