Government officials say needle-exchange programs curb HIV.
D005380:Financing, Government; D015658:HIV Infections / Q000517:prevention & control* / Q000635:transmission; D006801:Humans; D018671:Needle-Exchange Programs / Q000331:legislation & jurisprudence*; D011640:Public Policy; D012747:Sexual Partners; D015819:Substance Abuse, Intravenous