Update: acquired immunodeficiency syndrome--United States, 1989.
D000163:Acquired Immunodeficiency Syndrome / Q000453:epidemiology* / Q000209:etiology; D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011159:Population Surveillance; D012621:Seasons; D014481:United States / Q000453:epidemiology