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PREVALENCE OF HEPATITIS B AND C VIRUS MARKERS AMONG MALARIA-EXPOSED GOLD MINERS IN BRAZILIAN AMAZON
Vírus da Hepatite C
Emigrações e Imigração
Epidemiologia
Amazônia brasileira
Hepatitis C virus
Emigrations and immigration
Epidemiology
Brazilian Amazon
Afiliación
Universidade Federal de Mato Grosso. Faculdade de Ciências Médicas. Núcleo de Estudos de Doenças Infecciosas e Tropicais. Cuiabá, MT, Brasil.
Universidade Federal de Mato Grosso. Faculdade de Ciências Médicas. Núcleo de Estudos de Doenças Infecciosas e Tropicais. Cuiabá, MT, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Virologia. Rio de Janeiro, RJ, Brasil.
Universidade Federal de Mato Grosso. Faculdade de Ciências Médicas. Núcleo de Estudos de Doenças Infecciosas e Tropicais. Cuiabá, MT, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Virologia. Rio de Janeiro, RJ, Brasil.
Resumen en ingles
Hepatitis B and C virus markers were assessed during a survey on malaria in gold mine camps in
southern Brazilian Amazon in order to identify risk factors associated to these viral diseases. The study
comprised 520 subjects, most of them were gold miners. Missing subjects totaled 49 (8.6%). Among
these 520, 82.9% had HBV markers and 7.1% were HBsAg positive. Previous hospitalization, surgery,
sexually transmitted diseases and incarceration were quite common among surveyed people, but there is
no association between total HBV markers and these factors. On other hand, HBsAg was independently
associated to history of sexually transmitted diseases and history of surgery after adjustment. The most
frequent HBsAg subtypes identified, adw2 (59%), predominates in populations of Northeast Brazil. The
most surveyed people were immigrants coming from that area suggesting that immigrants carried HBV
themselves to the study area. Immunoblot (RIBA) confirmed-anti-HCV were found in 2.1%. The only
variable associated to anti-HCV in multivariate analysis was illicit intravenous drug. Lack of HCV
infection in subjects with such a high HBV markers prevalence reinforces the opinion that HCV is
transmitted by restricted routes when compared to HBV. Furthermore, gold miners in Amazon may be
considered as a risk group for HBV infection, but not for HCV.
Palabras clave en portugues
Vpirus da Hepatite BVírus da Hepatite C
Emigrações e Imigração
Epidemiologia
Amazônia brasileira
Palabras clave en ingles
Hepatitis B virusHepatitis C virus
Emigrations and immigration
Epidemiology
Brazilian Amazon
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