| country-specific constancy by age in caga+ proportion of helicobacter pylori infections. | helicobacter pylori strains may be either caga+ or caga-, and in logitudinal studies, infection with a caga+ strain has been associated with increased risk for the development of atrophic gastritis and cancer of the distal stomach. we sought to determine the relative proportion of strains producing caga in different geographic locales, and the extent to which caga seroprevalence varied in countries with different gastric and esophageal cancer rates. using an enzyme-linked immunosorbent assay (el ... | 1997 | 9247289 |
| seroprevalence of helicobacter pylori, incidence of gastric cancer, and peptic ulcer-associated hospitalizations in a canadian indian population. | the living conditions of many aboriginal communities in canada may place their residents at risk for h. pylori infection. our aims were to determine: (1) the seroprevalence of h. pylori in a traditional indian community, (2) the clinical relevance of h. pylori infection in this population, and (3) if h. pylori could be identified by polymerase chain reaction from the local water. a demographic questionnaire was administered, and blood was collected from subjects in an indian community in northwe ... | 1999 | 10219820 |
| age at acquisition of helicobacter pylori in a pediatric canadian first nations population. | few data exist regarding the epidemiology of helicobacter pylori infections in aboriginal, including the first nations (indian) or inuit (eskimo) populations of north america. we have previously found 95% of the adults in wasagamack, a first nations community in northeastern manitoba, canada, are seropositive for h. pylori. we aimed to determine the age at acquisition of h. pylori among the children of this community, and if any association existed with stool occult blood or demographic factors. | 2002 | 11966865 |