Despite national decline, syphilis increases in some cities.
D000163:Acquired Immunodeficiency Syndrome / Q000453:epidemiology*; D006069:Gonorrhea / Q000188:drug therapy / Q000453:epidemiology*; D006801:Humans; D015995:Prevalence; D013587:Syphilis / Q000453:epidemiology*; D014481:United States / Q000453:epidemiology