title: Emerging trends. New HIV infections among gay men cause for concern, CDC says.
mesh_terms: D002487:Centers for Disease Control and Prevention, U.S.; D015658:HIV Infections / Q000175:diagnosis / Q000453:epidemiology* / Q000517:prevention & control; D018451:Homosexuality, Male; D006801:Humans; D008297:Male; D012749:Sexually Transmitted Diseases / Q000453:epidemiology / Q000517:prevention & control; D014481:United States / Q000453:epidemiology