World AIDS cases: update.
D000163:Acquired Immunodeficiency Syndrome / Q000175:diagnosis / Q000453:epidemiology*; D000328:Adult; D002648:Child; D014943:Global Health; D015658:HIV Infections / Q000175:diagnosis / Q000453:epidemiology*; D015497:HIV-1; D006801:Humans; D014944:World Health Organization