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Epidemiology of Helicobacter pylori infection in asymptomatic children in Beijing areas

??Objective??To investigate the current rate of Helicobacter pylori infection in asymptomatic children residing in Beijing urban area and to discuss the risk factors that predispose children to such infection. Methods??A total of 1196 asymptomatic children aged from 1 month to 18 years were selected from urban schools in Beijing areas. A face to face interview was conducted with a specially designed standard questionnaire. We performed enzyme-linked immunoadsorbent assay ??ELISA?? for H.pylori stool antigen test to determine H.pylori infection status. Results??The overall prevalance of H.pylori was 10.6%. On univariate analysis??risk factors for H.pylori infection included age??poor hygienic habits??lower socioeconomic status??and positive family history of gastrointestinal diseases. Multivariate logitstic regression identified that age??poor hygienic habits??economic status??number of people in the same house??house area??and positive family history of gastrointestinal diseases were the independent risk factors of H.pylori infection. Conclusion??H.pylori infection rate among these children is high??and increases with age. H.pylori infection clusters within families and is closely associated with personal and familial hygienic habits.