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vol.37 suppl.2The evolution of knowledge about viral hepatitis in Amazon region: from epidemiology and etiology to the prophilaxyPrevalence of hepatitis B virus genotypes and the occurrence of precore mutation A-1896 and to correlate them with the clinical presentation of chronic hepatitis, in a population group of the eastern Amazon region author indexsubject indexarticles search
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Revista da Sociedade Brasileira de Medicina Tropical

Print version ISSN 0037-8682


MONTEIRO, Maria Rita de Cassia Costa; NASCIMENTO, Margarida Maria Passeri do; PASSOS, Afonso Dinis Costa  and  FIGUEIREDO, José Fernando de Castro. Soroepidemiological survey of hepatitis B virus among HIV/aids patients in Belém, Pará - Brasil. Rev. Soc. Bras. Med. Trop. [online]. 2004, vol.37, suppl.2, pp.27-32. ISSN 0037-8682.

The objective of this investigation was to study the prevalence of hepatitis B virus infection in a sample of 406 adult patients with human immunodeficiency virus infection who attended at the public health care in the city of Belém, Pará, Brazil, as well as analyzing possible risk factors for hepatitis B virus infection. The overall prevalence of hepatitis B virus infection was 51% (CI: 46.1 - 55.8), with 7.9% (CI: 5.3 - 10.5) for HBsAg, 45.1% (CI: 40.3 - 49.9) for anti-HBc and 32.3% (CI: 27.5 - 36.8) for anti-HBs. After adjustment using logistic regression, hepatitis B serological markers were associated with the following variables: age, marital status and sexual preference. The frequency of hepatitis B markers was 28.7% in heterosexuals and 68.8% in homo/bisexuals (CI: 3.50 - 9.08; OR: 5.63; p=0.000). In married people the frequency was 31% and 58.7% in single people (CI: 1.29 - 3.63); OR: 2.16; p=0.003). Multivariate analysis showed no association between hepatitis B virus infection and illicit injectable drug use.

Keywords : Hepatitis B; Epidemiology; Risk factors; Coinfection; HIV.

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