Epidemiological and molecular investigation on prevalence of antimicrobial resistance in Escherichia coli isolates from pups, diseased dogs, and humans.

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In this study, I investigated prevalence of antimicrobial resistance and their relative factors in Escherichia coli isolates from dogs and humans. Pup-origin isolates spread clonally in each kennel, resulting in different prevalence of resistance between kennels. In addition, resistance prevalence was associated with virulence factors and phylogenetic groups in dogs with urogenital infections. Furthermore, virulence factors, but not antimicrobial resistance, was more prevalent in canine isolates than in owner isolates, and genetic analysis revealed clone sharing between dogs and their owners.