title: The new faces of the epidemic.
authors.forename: R A
authors.initials: RA
authors.lastname: Cassetta
mesh_terms: D000293:Adolescent; D000328:Adult; D005006:Ethnicity; D005260:Female; D015658:HIV Infections / Q000453:epidemiology* / Q000451:nursing / Q000635:transmission; D015497:HIV-1; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D011247:Pregnancy; D044469:Racial Groups; D012307:Risk Factors; D012725:Sexual Behavior; D014481:United States / Q000453:epidemiology