| prevalence of antibody to hepatitis a virus in drinking water workers and wastewater workers in texas from 1996 to 1997. | to determine if wastewater workers had a higher prevalence of antibody to hepatitis a virus (anti-hav) than drinking water workers, a convenience sample of texas wastewater and drinking water workers was evaluated for risk factors by questionnaire and tested for anti-hav. a total of 359 wastewater and 89 drinking water workers participated. anti-hav positivity was 28.4% for wastewater and 23.6% for drinking water workers. after adjustment for age, educational attainment, and hispanic ethnicity, ... | 2000 | 10953820 |
| elevated hepatitis a and e seroprevalence rates in a texas/mexico border community. | two seroprevalence studies of viral hepatitis a and hepatitis e were conducted in el paso, tex, and cd juárez, mexico. subjects were randomly selected, low-income pregnant women. blood from 557 women in el paso and 307 women in cd juárez, obtained from routine prenatal testing, was analyzed for antibodies to hepatitis a and hepatitis e. women from both cities showed high seroprevalence rates of hepatitis a (75.8% in el paso and 96.1% in cd juárez). rates increased significantly by age, with 100% ... | 1998 | 9595956 |
| hepatitis a among schoolchildren in a us-mexico border community. | a cross-sectional study investigated the association of hepatitis a seropositivity with environmental and personal risk factors among children in a united states-mexico border community. | 1997 | 9357363 |
| detection of hepatitis a virus in estuarine samples by gene probe assay. | the development and use of gene probe assays for rapid, sensitive and specific detection of hepatitis a virus in natural estuarine settings are described. potentially health hazardous water-borne dissemination of hepatitis a virus was detected by dot hybridization in sewage-polluted estuarine, bayou and lake waters of coastal texas. | 1988 | 2856300 |
| preliminary serologic studies of antibody to hepatitis a virus in populations in the united states. | | 1976 | 186542 |