Routine testing for the AIDS virus.
D015492:AIDS Serodiagnosis; D000293:Adolescent; D000328:Adult; D002487:Centers for Disease Control and Prevention, U.S.; D015658:HIV Infections / Q000175:diagnosis*; D006801:Humans; D008403:Mass Screening; D011640:Public Policy; D014481:United States; D035141:Voluntary Programs