AIDS: epidemiological lessons from the health-care setting.
D000163:Acquired Immunodeficiency Syndrome / Q000453:epidemiology* / Q000517:prevention & control / Q000635:transmission; D002487:Centers for Disease Control and Prevention, U.S.; D006679:HIV Seropositivity / Q000175:diagnosis; D006281:Health Occupations; D006801:Humans; D012307:Risk Factors; D014481:United States