title: Prevention.  HAART expansion leads to drop in new infections among infection drug users.
mesh_terms: D023241:Antiretroviral Therapy, Highly Active; D015658:HIV Infections / Q000150:complications / Q000188:drug therapy / Q000517:prevention & control*; D006801:Humans; D015819:Substance Abuse, Intravenous / Q000150:complications*