From the Centers for Disease Control. Primary, secondary syphilis--U.S., 1981-1990.
D004196:Disease Outbreaks; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D013587:Syphilis / Q000453:epidemiology*; D013591:Syphilis, Cutaneous / Q000453:epidemiology; D014481:United States / Q000453:epidemiology