Teen knowledge of HIV poor.
D000293:Adolescent; D006678:HIV; D015658:HIV Infections / Q000517:prevention & control / Q000635:transmission / Q000821:virology; D006266:Health Education / Q000706:statistics & numerical data*; D006801:Humans; D007109:Immunity; D009519:New York City; D012307:Risk Factors; D014505:Urban Population