| seroprevalence of hepatitis a virus and helicobacter pylori infections in the general population of a developed european country (the san marino study): evidence for similar pattern of spread. | to evaluate the role of faecal-oral transmission in the spread of helicobacter pylori. | 1997 | 9431898 |
| seroprevalence and anti-hev persistence in the general population of the republic of san marino. | the prevalence of anti-hev was assessed in 2,233 subjects aged 20-79 years in the republic of san marino in the years 1990-1991. the sera were tested by elisa and further confirmed by western blot (wb) analysis. the overall anti-hev prevalence was 1.5%. a significant trend by age was observed. anti-hev prevalence was 0.6% in subjects <30 years and 3.3% in those older than 70 years of age. family size larger than four persons (or = 3.8; 95% ci = 1.8-13.2) was the sole independent predictor of ant ... | 1999 | 10223545 |
| population-based survey of hepatitis a virus infection in the republic of san marino. | in 1990-1991, the prevalence of antibodies to hepatitis a virus infection (anti-hav) was assayed by the elisa method among 1528 apparently healthy subjects, 20-85 years old in the republic of san marino. subjects were selected from the list of residents by a random stratified sampling procedure with a proportional allocation by age, sex and district of residence. the overall anti-hav prevalence was 64.7%; it increased from 28.6% in subjects 20-30 years old to 97% in those > 60 years (p < 0.01). ... | 1997 | 9324216 |