Bureau looking for AIDS-like illnesses.
D015496:CD4-Positive T-Lymphocytes / Q000276:immunology; D002487:Centers for Disease Control and Prevention, U.S.; D006679:HIV Seropositivity / Q000453:epidemiology* / Q000276:immunology; D006801:Humans; D007958:Leukocyte Count; D011159:Population Surveillance; D014481:United States