Resumo

VALDESPINO, José Luis et al. Prevalence of HIV infection among adult population in Mexico: an increasingly expanding epidemic. Salud pública Méx [online]. 2007, vol.49, suppl.3, pp.s386-s394. ISSN 0036-3634.

OBJECTIVE: UNAIDS has recognized that estimating HIV infection at a national or regional level is important for evaluation, program planning and advocacy. Following this recommendation, the purpose of this study was to estimate the magnitude of HIV infection prevalence among adults from the general population using information from the National Health Survey (ENSA 2000), a probabilistic, multi-stage, stratified, cluster household survey conducted by the Mexican Ministry of Health between November 1999 and June 2000. Availability of information from the Seroepidemiological Survey conducted in 1987 allowed for the estimation of trends between the two surveys (1987-2000). MATERIAL AND METHODS: A total of 21 271 males and females 20 years or older included in the ENSA 2000 were randomly selected and studied for anti-HIV 1/2 IgG (ELISA), confirmed by immunoelectrotransference (WB), and for risk factors associated with HIV infection. Samples were processed in the National Institute of Public Health in 2005. RESULTS: Prevalence for HIV infection was 0.25%. The main factors associated with infection were younger ages, male gender, residence in the Federal District, college education or higher, and being single or divorced. CONCLUSIONS: Seroprevalence among adults shows a ten-fold increase as compared with the results of the national seroprevalence survey of 1987. Although the epidemic continues to be concentrated among men who have sex with men, results provide evidence of dissemination towards the heterosexual population.

Palavras-chave : HIV [AIDS]; seroepidemiologic studies; population; survey; Mexico.

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