Ancient Smallpox DNA Found in Chilean Remains Sheds Light on Virus Evolution

1-Minute Brief

The discovery of ancient smallpox DNA in Chilean remains provides new insights into the origins and spread of the virus in the Americas.

Key Facts

• Scientists identified smallpox viruses in the remains of people in Chile estimated to be around 500 years old.
• The research offers evidence that smallpox may have evolved over time to become more deadly.
• DNA analysis from ancient mummies supports the theory that European colonization introduced smallpox to the Americas.
• The study is described as providing the firmest evidence yet linking colonization to smallpox's arrival in the Americas.
• Findings suggest ancient smallpox strains may have been less deadly than those that later caused global outbreaks.

What Happened

Researchers analyzed DNA from ancient Chilean remains and identified smallpox viruses, revealing information about the virus's evolution and its introduction to the Americas.

Why It Matters

These findings help clarify how smallpox spread to the Americas and evolved over centuries, informing understanding of historical pandemics and the impact of colonization on indigenous populations.

What's Next

Further research may focus on comparing ancient and modern smallpox strains to better understand the virus's evolution and historical impact.