It has long been believed that the sailors who crewed Christopher Columbus's ships in his famous 1492 voyage contracted syphilis from the natives and transported the deadly disease back to Europe. But was this disease already in Europe long before Columbus was even born? According to a recent article in the Journal of Biological and Clinical Anthropology that just might be the case.
Of course, now most cases of syphilis are treatable and curable with antibiotics, but in 1492 things were a bit different They didn't know what caused it and indeed that bacteria even existed. Antibiotics? Still centuries away. So syphilis was often deadly, and, if not, it was very disfiguring and incapacitating.
The real culprit is a spirochete called Treponema palladium. And it might have been in Europe as early as 1320.