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Revista Brasileira de Epidemiologia

versão impressa ISSN 1415-790Xversão On-line ISSN 1980-5497

Resumo

PASSOS, Afonso Dinis Costa et al. Hepatitis B among female sex workers in Ribeirão Preto - São Paulo, Brazil. Rev. bras. epidemiol. [online]. 2007, vol.10, n.4, pp.517-524. ISSN 1415-790X.  http://dx.doi.org/10.1590/S1415-790X2007000400010.

OBJECTIVE: To estimate the prevalence of hepatitis B markers and to study the risk factors for this disease among female sex workers in the city of Ribeirão Preto, Brazil. METHODS: A questionnaire was given to 449 female sex workers in order to obtain information about demographic, socioeconomic and behavioral variables. Blood samples were collected and analyzed by immunoenzymatic techniques for detection of HBsAg, anti-HBs, anti-HBc and anti-HCV markers. RESULTS: The mean age of participants was 23 years, varying from 13 to 64 years. A high spatial mobility was observed, with 47.9% of participants residing in places out of the region of Ribeirão Preto or in other Brazilian states. Complete absence of previous vaccine against hepatitis B was referred by 98.2%. Overall, the presence of any hepatitis B marker was observed in 106 participants (prevalence of 23.6%; 95% CI: 19.7 27.5), with 84 positive for anti-HBs (18.7%), 100 for anti-HBc (22.3%), and only 3 for HBsAg (0.7%). The logistic regression analysis showed association between hepatitis B markers and the following co-variables: residence in Ribeirão Preto, age, low socioeconomic level, consumption of crack, intercourse with HIV-infected individuals, history of previous hepatitis, intercourse with a case of hepatitis, and positivity for hepatitis C. CONCLUSIONS: Ribeirão Preto's female sex workers present several risk factors for hepatitis B and almost absence of previous specific vaccination, making it necessary to emphasize this low-cost preventive measure, preferably through the use of a mobile team, taking the vaccine to their places of work.

Palavras-chave : Hepatitis B; Prevalence; Sex workers; Prostitutes.

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