| [high prevalence of hepatitis b infection in amerindians in japreira, zulia state, venezuela]. | the aim of this study was to determine the prevalence of hepatitis b virus (hbv) infection in the japreira indigenous community, venezuela, and its relationship to age and gender. an intentional, non-probabilistic sample of 149 individuals was selected from a total of 300. all samples were studied for the presence of total hbv antibodies (total anti-hbc), and the positive samples were tested for hbv surface and "e" antigens (hbsag, hbeag). overall prevalence rates of total anti-hbc were 72.9% in ... | 2008 | 18461250 |
| [hepatitis b in children with cancer]. | introduction: cancer patients can be asymptomatic carriers of the hepatitis b virus (hbv), which can be reactivated by chemotherapy. our aim was to identify the serological markers of hbv in children with cancer who were asymptomatic carriers of the virus. fifty two (52) children with cancer treated at the maracaibo university hospital in venezuela were studied, 28 of these children (53.8%) were hbv positive, despite no clinical or biochemical signs or symptoms of hepatitis. the type of serologi ... | 2006 | 17053821 |
| epidemiology of hepatitis c virus in western venezuela: lack of specific antibody in indian communities. | hepatitis c virus (hcv) is transmitted mainly by the parenteral route after percutaneous exposure to virus-infected products or body fluids. thus, hcv shares with hepatitis b and d (hbv, hdv) viruses this common transmission route. the prevalence of antibody against hcv (anti-hcv) was studied in 1155 serum samples from individuals at risk of infection by bloodborne or sexually transmitted agents, as well as from others lacking such risk factors, from the city of maracaibo, venezuela. anti-hcv an ... | 1994 | 7523583 |