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