title: NIAID, AmFAR launch huge new study of HIV infection.
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000453:epidemiology*; D000293:Adolescent; D000328:Adult; D016208:Databases, Factual; D015658:HIV Infections / Q000453:epidemiology*; D006801:Humans; D008137:Longitudinal Studies; D009316:National Institutes of Health (U.S.); D014481:United States / Q000453:epidemiology