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‘This Is Very Strange’: Ancient Smallpox May Have Been Less Deadly

Scientists have found smallpox DNA in 500-year-old Inca mummies, but the virus may have been less deadly than expected.

By · Published August 1, 2026  20:47 UTC · Updated August 1, 2026  21:28 UTC

7sources
7articles
23velocity
+0%since first seen
96d agofirst detected
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The obvious questions

What is the significance of finding smallpox DNA in Inca mummies?

The discovery provides direct evidence that European colonists brought smallpox to the Americas during the Spanish conquest. It also offers insights into the virus's evolution and its impact on indigenous populations.

Why is the finding surprising?

The smallpox virus found in the mummies appears to be less deadly than later strains, which contradicts historical accounts of widespread mortality.

What can ancient DNA tell us about historical diseases?

Ancient DNA analysis allows scientists to trace the spread of diseases and understand their impact on past populations. It can also provide insights into how diseases evolved over time.

The story so far

⚡ Executive Intelligence Takeaways Corroborated across 7 independent newsrooms
  • Velocity & Diffusion: Coverage exploded across 7 distinct news outlets with 7 published articles, achieving a live velocity of 23.
  • Primary Driver: Scientists have found smallpox DNA in 500-year-old Inca mummies, but the virus may have been less deadly than expected.
  • Source Integrity: Verified strictly against primary headline reporting under zero-hallucination protocols.

Scientists have found smallpox DNA in 500-year-old Inca mummies. This discovery provides direct evidence that European colonists brought the disease to the Americas during the Spanish conquest. The mummies, recovered from Chile, show that the smallpox virus was present in the region around the time of the conquest. The finding supports historical accounts that smallpox devastated indigenous populations.

The discovery is surprising because the smallpox virus found in the mummies appears to be less deadly than the strains that circulated in later centuries. This raises questions about how the virus evolved and how it affected populations in the Americas. The New York Times notes that the findings are puzzling, as the virus's reduced lethality contradicts historical records of widespread mortality. The research also underscores the role of ancient DNA in understanding historical diseases.

By analyzing the genomes of the smallpox virus from the mummies, scientists can trace the spread of the disease and its impact on populations. However, the exact implications of the virus's reduced lethality are not yet clear. The findings may prompt further research into the evolution of smallpox and its effects on different populations.

Synthesized by Archynetys from the headlines below under a strict no-invention contract. ✓ fact-checked: all claims supported by sources Updated 94d ago.

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Topics

smallpox Inca Spanish conquest ancient DNA disease evolution historical epidemiology

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