Targeting HIV prevention message to specific groups was key to San Francisco's success.
D015658:HIV Infections / Q000453:epidemiology / Q000517:prevention & control*; D006266:Health Education / Q000458:organization & administration*; D006801:Humans; D008913:Minority Groups; D012495:San Francisco / Q000453:epidemiology; D019037:Urban Health Services / Q000458:organization & administration*