Leprosy spread throughout America centuries before the arrival of Europeans

30 Puede 2025, 12:15
Tooth found at an archaeological site in America against the backdrop of the wiphala flag of Indigenous peoples.

In 2017, biologist Nicolás Rascovan discovered something that made no sense. He was analyzing DNA extracted from the remains of people who had died thousands of years ago. In one of the samples taken in Canada, he found leprosy — one of the oldest and most stigmatizing diseases in history. But this was impossible, since all textbooks say that this disease was brought to America by the Spanish and Portuguese conquistadors.

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Maria Lopopolo, first author of the study, with Nicolás Rascovan.

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