| preliminary serologic studies of antibody to hepatitis a virus in populations in the united states. | | 1976 | 186542 |
| 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 |
| viral hepatitis risk in urban emergency medical services personnel. | houston has large groups of people known to be at high risk for hepatitis b virus (hbv) infection. emergency medical services (ems) personnel are continuously exposed to blood from these high-risk individuals. we sought to determine the prevalence of hbv infection in the city's ems personnel. of the 350 houston firefighters assigned to ems, 344 were surveyed by questionnaire and a blood specimen was obtained. each sample was assayed by radio-immunoassay or enzyme-linked immunoassay for hepatitis ... | 1986 | 3954182 |
| isolation of avian influenza virus in texas. | an avian influenza virus with surface antigens similar to those of fowl plague virus (hav 1 nav 2) was isolated in 1979 from 2 commercial turkey flocks in central texas. two flocks in contact with these infected flocks developed clinical signs, gross lesions, and seroconversion but yielded no virus. this was the first recorded incidence of clinical avian influenza in texas turkeys and only the second time that an agent with these surface antigens was isolated from turkeys in u.s. | 1981 | 6789814 |
| the epidemiology of viral hepatitis in children in south texas: increased prevalence of hepatitis a along the texas-mexico border. | an initial retrospective study of 194 children demonstrated a high prevalence of hepatitis a but not hepatitis b or c infection among children living along the texas-mexico border. a larger prospective study of hepatitis a was conducted with 285 children (aged 6 months to 13 years) living in 3 sociodemographically dissimilar areas of south texas. children living in colonías along the border had a significantly higher prevalence of hepatitis a virus infection (37%) than children living in urban b ... | 1999 | 10395871 |
| age distribution of helicobacter pylori seroprevalence among young children in a united states/mexico border community: evidence for transitory infection. | helicobacter pylori infection has been linked to a spectrum of gastroduodenal diseases of broad public health impact, yet the natural history of this frequently asymptomatic infection remains poorly understood. evidence suggests that initial acquisition occurs primarily during childhood and may persist throughout life. the seroprevalence of h. pylori antibodies was examined in 365 primary schoolchildren aged 4-7 years in a low-income united states/mexico border community from january to may 1996 ... | 1999 | 10430225 |
| 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 |
| a study of hepatitis a seropositivity in dallas county, texas, 1998 through 1999. | this paper provides background information on the epidemiology and a descriptive analysis of infection with hepatitis a virus in dallas county, texas, for 1998 and 1999. reported cases were obtained from the dallas county health department, and incidence rates per 100,000 population were calculated. persons who tested seropositive for hepatitis a virus between january 1, 1998, and december 31, 1999, were included. variables of interest included age, sex, race, and date of occurrence. the overall ... | 2002 | 12515248 |
| notes from the field: health care-associated hepatitis a outbreak - texas, 2015. | on august 27-28, 2015, the texas department of state health services received calls from fort bend county and harris county health departments requesting postexposure prophylaxis (pep) recommendations for contacts of two nurses (patients a and b) with confirmed hepatitis a virus (hav) infection. both nurses had symptom onset during august 15-19 and worked for the same pediatric home health care agency in another jurisdiction. because of the proximity of the onset dates, a common source exposure ... | 2016 | 27123787 |