Volume 74, Issue 4
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645


The study aimed at evaluating the seroprevalence of and sociodemographic, health, lifestyle, and environmental hygiene conditions associated with infection in Vietnamese children. Data from 824 children, aged from 6 months to 15 years and gastrointestinal symptom free when consulted, admitted to a university hospital, were collected using a structured questionnaire and ELISA test for infection. The data were examined using univariate and multivariate analyses. seroprevalence was 34.0%. Age groups from 3 to 6 years and older than 6, and number of offspring were positively and independently associated with seropositivity [adjusted OR (95% CI): 2.9 (1.5–5.5); 1.9 (1.1–3.1) and 1.8 (1.1–2.6), respectively]. Breastfeeding more than 6 months was negatively and independently associated with seropositivity [adjusted OR (95% CI): 0.5 (0.3–0.9)]. Mother’s age, history of allergy, gastro-duodenal disease history in the past, initiating collective life before 6 years, sharing bed with parents and time of bed sharing with parents > 24 months were positively but not independently associated with seropositivity. None of the other environmental or lifestyle conditions examined was associated with infection. Our results support person-to-person transmission and the role of sociodemographic factors in infection.


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  • Received : 06 Aug 2004
  • Accepted : 14 Nov 2005

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