Update: public health surveillance for HIV infection--United States, 1989 and 1990.
D000163:Acquired Immunodeficiency Syndrome / Q000453:epidemiology; D002487:Centers for Disease Control and Prevention, U.S.; D015658:HIV Infections / Q000453:epidemiology*; D006801:Humans; D011159:Population Surveillance / Q000379:methods; D014481:United States / Q000453:epidemiology