Ancient mummy DNA in Chile shows that colonisation brought smallpox to the Americas
Ancient Mummy DNA in Chile Reveals Smallpox Origins in the Americas
Usagevpn.com – Ancient mummy DNA in Chile has provided groundbreaking evidence that European colonisation was responsible for bringing smallpox to the Americas. According to a comprehensive new study, researchers have uncovered the clearest genetic proof yet of this historical disease transmission. Smallpox stands as one of the most devastating diseases in human history, claiming millions of lives before its eventual eradication in 1980 through widespread vaccination efforts. For centuries, this terrifying virus killed approximately one-third of all infected individuals and left most survivors with deep, sometimes disfiguring scars across their bodies.
Genetic Evidence from Camarones Archaeological Site
The first historically documented smallpox outbreak in the Americas occurred in 1518, during the Spanish conquest of the Caribbean region. Following this initial outbreak, the disease spread rapidly across North, Central and South America, devastating Indigenous populations who had no prior immunity to the virus. In the new study, published in the prestigious journal Science, researchers from Trinity College Dublin examined 13 bone samples previously collected from an archaeological site at Camarones, located in northern Chile. This location proved crucial for understanding how ancient mummy DNA in Chile preserved viral genetic material for future analysis.
The analysis provides the strongest genetic link yet between smallpox found in the Americas and strains that circulated elsewhere in the world. This discovery offers new insights into how the virus reached remote populations following European colonisation, the authors said. Scientists found evidence of two smallpox infections in ancient DNA from the leg bone fragments of an adult man and woman, who were between 18 and 35 years old and whose cause of death was likely smallpox. By carefully dating the remains and analysing the viral DNA, the scientists concluded that the two individuals likely died between 1492 and 1631.
Researchers also compared this version of the smallpox virus with other known strains and found that it fell genetically between medieval European strains and later variants. This was important molecular evidence, suggesting that the strains of smallpox infecting people in the Americas descended from strains circulating in Europe. "Nobody would ever question that smallpox came to this hemisphere from colonisation, but this proves it," said Patricia Foster, a biologist at Indiana University, who did not participate in the study.
"It wasn't just cultural or demographic. It's literally written into biological evidence that we can still recover and read today." — Constanza de la Fuente Castro, biological anthropologist at the University of Chile
Exactly which population brought smallpox to the Americas from Europe remains unclear, said the study authors. Settlers came in different waves to the Americas following the explorations of Christopher Columbus in the Caribbean in 1492 and Amerigo Vespucci along the South American coast about a decade later. The disease may also have spread via Africa during the expansion of the transatlantic slave trade. The infections were identified in an area with no previous record of smallpox, raising new questions about how the virus reached such a remote part of South America. It may have spread along Indigenous trading networks that predated the arrival of Europeans.
Studying different strains of the virus also allowed scientists to trace how it evolved over time, including the loss or inactivation of certain genes that may have helped it adapt to humans. The findings point to how devastating the disease was across the Americas, wiping out entire populations and leaving them vulnerable to European conquest, said study coauthor Constanza de la Fuente Castro, a biological anthropologist at the University of Chile.
Frequently Asked Questions About Ancient Mummy DNA in Chile
Where exactly was the ancient mummy DNA found? The ancient mummy DNA in Chile was discovered at the Camarones archaeological site in northern Chile, where researchers examined 13 bone samples from two individuals.
When did the infected individuals likely die? Based on dating the remains and analysing the viral DNA, scientists concluded that the two individuals likely died between 1492 and 1631.
How does this discovery change our understanding of smallpox? This research provides the strongest genetic link yet between smallpox in the Americas and European strains, confirming that colonisation brought the disease to the New World.
What makes this DNA evidence significant? The ancient mummy DNA in Chile offers molecular proof that smallpox strains in the Americas descended from European strains, with genetic positioning between medieval European and later variants.