title: HIV prevention clashes with politics over needle-exchange programs.
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000453:epidemiology; D005260:Female; D015658:HIV Infections / Q000453:epidemiology / Q000517:prevention & control* / Q000635:transmission; D006801:Humans; D008297:Male; D018671:Needle-Exchange Programs / Q000331:legislation & jurisprudence; D011057:Politics; D011639:Public Opinion; D014481:United States / Q000453:epidemiology