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5,500-year-old DNA shows syphilis was rooted in the Americas, before Columbus The Washington PostThe bacterium behind syphilis has a far more ancient history than we thought Scientific American5,500-year-old human skeleton discovered in Colombia holds the oldest evidence yet that syphilis came from the Americas Live ScienceAncient DNA Reveals Twisted Roots of Syphilis Go Back 5,500 Years ScienceAlert
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