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Background and Aims: To further evaluate intrafamilial transmission of H. pylori infection during childhood, we investigated the prevalence of H. pylori in family members from a poor H. pylori high‐prevalence urban community in the Northeast of Brazil.
Methods: H. pylori infection was investigated in 570 members of 128 households, by 13C‐urea breath test in children and by ELISA in mothers and other...
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