Maryland program focuses on HIV 'positives'.
D015492:AIDS Serodiagnosis; D015142:Baltimore; D003159:Community-Institutional Relations; D003376:Counseling; D015658:HIV Infections / Q000175:diagnosis / Q000517:prevention & control*; D006293:Health Promotion / Q000458:organization & administration*; D006801:Humans; D008952:Mobile Health Units; D018671:Needle-Exchange Programs; D011204:Poverty Areas; D021841:Safe Sex; D014505:Urban Population