Résumé :
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[BDSP. Notice produite par INIST-CNRS o7oR0xJ9. Diffusion soumise à autorisation]. Background Enterovirus infections are common, although most often sub-clinical. The present purpose was to assess the impact of breastfeeding and other factors on enterovirus infections in infancy. Methods A prospective observational study was carried out on a population-based cohort of 639 Norwegian infants aged 3-12 months. The outcome was enterovirus RNA measured in monthly stool samples. Data on underlying determinants, such as dietary feeding and household factors, were reported in parental questionnaires. Multivariable logistic regression was performed to allow for common confounders. Statistical analyses were performed by GLLAMM using Stata 9.2, which corrects for subject-specific random effects. Results The prevalence of enterovirus in stools was 11.1% (475/4279). Risk of enterovirus infection decreased with increasing number of daily breastfeeds ; the effect was most pronounced at the age of 3 months [odds ratio (OR), 0.85 ; 95% confidence interval (CI) 0.8-0.9, P
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