title: HIV-AIDS transmission symbols.
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000453:epidemiology / Q000635:transmission*; D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D003142:Communication; D005260:Female; D006509:Hepatitis B / Q000453:epidemiology; D006716:Homosexuality; D006801:Humans; D008297:Male; D008875:Middle Aged; D012725:Sexual Behavior; D014481:United States