Infection with the human immunodeficiency virus (HIV) may have occurred as early as the late 1940s.
D019380:Anti-HIV Agents / Q000627:therapeutic use; D003223:Congo; D015658:HIV Infections / Q000188:drug therapy / Q000266:history*; D049673:History, 20th Century; D006801:Humans
D019380:Anti-HIV Agents