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prevalence of hepatitis a virus infection in afro-brazilian isolated communities in central brazil.to investigate hepatitis a virus (hav) infection rates among isolated african-descendant communities in central brazil, 947 subjects were interviewed about demographic characteristics in all 12 isolated afro-descendant communities existing in the state of mato grosso do sul, central brazil, between march 2002 and november 2003. blood samples were collected and sera were tested for hav antibodies (total and igm anti-hav) by enzyme-linked immunosorbent assay. the overall prevalence of hav infectio ...200717294012
[prevalence of hepatitis a and e virus infection in school children of an amazonian municipality in mato grosso state].the prevalence of antibodies to hepatitis a anti-hav total and e viruses anti-hev igg was assessed in 487 children ranging from 2 to 9 years old who were students of nurseries and public schools in a county of the amazonian region, in mato grosso state, brazil. the anti-hav and anti-hev prevalence were 86.4% (ci 95% 83 - 89.3) and 4.5% (ci95% 2.9 - 6.9), respectively. the anti-hav prevalence was high in all ages, suggesting that this is an area of high endemicity for hav infection. there was no ...200212011924
serological detection of hepatitis a virus in free-ranging neotropical primates (sapajus spp., alouatta caraya) from the paraná river basin, brazil.nonhuman primates are considered as the natural hosts of hepatitis a virus (hav), as well as other pathogens, and can serve as natural sentinels to investigate epizootics and endemic diseases that are of public health importance. during this study, blood samples were collected from 112 neotropical primates (ntps) (sapajus nigritus and s. cay, n = 75; alouatta caraya, n = 37) trap-captured at the paraná river basin, brazil, located between the states of paraná and mato grosso do sul. anti-hav igg ...201626910453
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