Intraspecific interactions between Escherichia coli strains in human newborns and in gnotobiotic mice and piglets.


A plasmid-free human Escherichia coli strain EMO, was inoculated to human newborns within two hours of life. It became established in the feces at a high population level. Ampicillin and tetracycline resistant E. coli strains disappeared or decreased to subdominant level in the inoculated newborns whereas they remained at a high level in the noninoculated… (More)


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