Syphilis,Human sexual behavior,Sexually transmitted disease,Girolamo Fracastoro,Tuskegee Study of Untreated Syphilis in the Negro Male,Treponema pallidum,Congenital syphilis,Spirochaete,Inflammation,Neuropathic arthropathy,Penicillin,Meningitis,Pandemic,General paresis of the insane,Globalization and disease,Antiretroviral drug,Mercury (element),Condom,Anthropology,Hideyo Noguchi Africa Prize