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American Journal of Epidemiology Vol. 135, No. 8: 883-894
Copyright © 1992 by The Johns Hopkins University School of Hygiene and Public Health

research-article

Sexual Behavior and Status for Human Immunodeficiency Virus Type 1 among Homosexual and Bisexual Males in Mexico City

M. Hernandez1, P. Uribe1, S. Gortmaker2,, C. Avila1, L. Elena De Caso1, N. Mueller2 and J. Sepulveda1

1General Direction of Epidemiology, Ministry of Health Mexico City, Mexico
2Department of Health and Social Behavior, Harvard School of Public Health Boston, MA

Reprint requests to Dr S. Gortmaker, Department of Health and Social Behavior, Harvard School of Public Health, 677 Huntington Avenue, Boston MA 02115

The authors examined sexual behaviors, the seroprevalence of human immunodeficiency virus type 1 (HIV-1), and condom use among 2,314 homosexual and bisexual men tested during 1988-1989 at the AIDS (acquired immunodeficiency syndrome) National Center in Mexico City Bisexuals constituted 24% of the sample, the seroprevalence rate was lower for bisexuals than homosexuals (21 vs 34%) In logistic regressions, HIV-1 seropositivity was independently related to age, education, pattern of insertive/receptive behavior in anal sex, lifetime number of male sex partners, having sex with someone with AIDS, homosexual versus bisexual behavior, and a history of condyloma The same logistic regressions were found to fit bisexuals and homosexuals The rate of HIV-1 was reduced in individuals who indicated always requiring their partners to use a condom when practicing receptive anal sex (1% of the total) The most common practice for both homosexuals and bisexuals was "mixed" behavior (i.e., both insertive and receptive anal sex); this was also the practice with the highest risk Bisexuals practiced both vaginal and anal sex with women and reported little condom use The substantial seroprevalence among bisexuals, their frequent sexual contact with women, and their low rate of condom use imply a continuing role as a bridge of infection to females Whether this risk will lead to a sustained heterosexual epidemic remains to be determined. Am J Epidemiol 1992,135 883–94.

bisexuality; HIV seroprevalence; HIV-1; homosexuality


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