Changes in HIV rates and sexual behavior among homosexual men, 1984 to 1988/92.

Data were collected from 1614 homosexual and bisexual men in 1984 through 1985 and from 1988 to 1992 in Pittsburgh. Of the men entering the study since 1988, 16% reported engaging in unprotected anal receptive intercourse with more than one partner during the 6 months before their visit. Approximately 7% of the younger men and 18% of the men over 22 years of age in the recent cohort were already infected with the human immunodeficiency virus, the same rates as those described 8 years ago. Aggressive risk-reduction programs are needed in high schools and existing networks in the gay community.