Prevention programs producing positive results.
D002487:Centers for Disease Control and Prevention, U.S.; D003140:Communicable Disease Control / Q000458:organization & administration*; D005260:Female; D015658:HIV Infections / Q000517:prevention & control*; D006801:Humans; D008297:Male; D016730:Program Development; D015397:Program Evaluation; D012749:Sexually Transmitted Diseases / Q000517:prevention & control; D014481:United States