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Behavioral risk factors for HIV infection among homosexual men at a Boston community health center.

Social and behavioral factors associated with human immunodeficiency virus (HIV) infection were analyzed using cross-sectional data from homosexual and bisexual male clients of a Boston community health center. Partners from California, and a previous period of greater sexual activity (a "high period"), were independently associated with positive HIV antibody status, as were the frequency of receptive anogenital contact, both during the "high period" and during the last six months.