| hepatitis a incidence rate estimates from a pilot seroprevalence survey in rio de janeiro, brazil. | to assess the impact of water sanitation and sewage disposal, part of a major environmental control programme in rio de janeiro, we carried out sero-prevalence studies for hepatitis a virus (hav) in three micro-regions in rio de janeiro. each region varied with regard to level of sanitation. we are interested in assessing the discriminating power of age-specific prevalence curves for hav as a proxy for improvement in sanitation. these curves will serve as baseline information to future planned s ... | 1999 | 10480710 |
| fulminant hepatitis failure in adults and children from a public hospital in rio de janeiro, brazil. | fulminant hepatic failure (fhf) is characterized by massive hepatocellular injury, whose physiopathology is still unclear. hepatitis b (hbv) is probably the most common viral cause of fhf, while hepatitis a (hav) virus seem occurs less frequently. however, the host and viral factors that determine the outcome of these infections are poorly understood. in the present study, viral load and genotyping determining regions of hav and hbv genomes were sequenced. eight fhf patients and one patient with ... | 2009 | 20428629 |
| age-specific prevalence of antibodies to hepatitis a in children and adolescents from rio de janeiro, brazil, 1978 and 1995. relationship of prevalence to environmental factors. | the age-specific prevalence of antibodies to hepatitis a virus (anti-hav) was determined in two different population groups with low socio-economic status from rio de janeiro city, brazil, whose serum samples were collected 17 years apart (population 1, 1978; population 2, 1995). in population 2, analysis of the anti-hav prevalence was also carried out with respect to environmental factors. population 1 was composed of 520 stored sera collected from the umbilical cord of term neonates and childr ... | 1998 | 9698834 |