STD treatment and incidence.
D000293:Adolescent; D000328:Adult; D000351:Africa, Eastern / Q000453:epidemiology; D015658:HIV Infections / Q000150:complications* / Q000175:diagnosis / Q000453:epidemiology*; D006801:Humans; D015994:Incidence; D008875:Middle Aged; D015995:Prevalence; D012749:Sexually Transmitted Diseases / Q000150:complications* / Q000188:drug therapy* / Q000453:epidemiology; D011795:Surveys and Questionnaires