title: World AIDS Day.
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000401:mortality / Q000517:prevention & control* / Q000635:transmission; D000328:Adult; D002648:Child; D005260:Female; D015528:HIV Seroprevalence / Q000639:trends; D006266:Health Education; D006801:Humans; D007391:International Cooperation; D008297:Male; D008875:Middle Aged; D014944:World Health Organization