Escherichia coli strains belonging to phylogenetic group B2 have superior capacity to persist in the intestinal microflora of infants.

@article{Nowrouzian2005EscherichiaCS,
  title={Escherichia coli strains belonging to phylogenetic group B2 have superior capacity to persist in the intestinal microflora of infants.},
  author={Forough L. Nowrouzian and Agnes E. Wold and Ingegerd Adlerberth},
  journal={The Journal of infectious diseases},
  year={2005},
  volume={191 7},
  pages={1078-83}
}
Escherichia coli strains segregate into 4 phylogenetic groups, designated "A," "B1," "B2," and "D." Pathogenic strains belong to group B2 and, to a lesser extent, group D, which more frequently carry virulence-factor genes than do group A strains and group B1 strains. This study investigated whether the capacity of E. coli to persist in the human intestine is related to its phylogenetic type. Resident (n=58) and transient (n=19) commensal E. coli strains isolated during a longitudinal study of… CONTINUE READING

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