NEW YORK (Reuters Health) - Intensive programs designed to prevent HIV infection in teens can delay the onset of sexual activity, decrease the number of sex partners and increase the use of condoms, according to a review of studies conducted between 1985 and 2001.

In addition to using condoms more often and having sex less frequently, teens who participated in intensive HIV risk-reduction programs developed better skills for negotiating lower-risk sexual encounters and talked about safer sex more often with their partners than teens who did not participate in HIV programs.