Enhanced persistence in the colonic microbiota of Escherichia coli strains belonging to phylogenetic group B2: role of virulence factors and adherence to colonic cells.

Abstract excerpt

Escherichia coli segregates into four phylogenetic groups, A, B1, B2 and D. B2 and D strains usually possess virulence factors, cause most extra-intestinal infections and have superior capacity to persist in the infantile colonic microbiota. Here, we investigated 24 resident and 37 transient E. coli strains from the colonic microbiota of 13 Swedish schoolgirls sampled in the 1970s with respect to phylogenetic...

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