Antimicrobial-resistant and extraintestinal pathogenic Escherichia coli in retail foods.

  • Johnson J
  • Kuskowski M
  • Smith K
 et al. 
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BACKGROUND: Extraintestinal Escherichia coli infections are associated with specialized extraintestinal pathogenic E. coli (ExPEC) strains and, increasingly, with antimicrobial resistance. The food supply may disseminate ExPEC and antimicrobial-resistant E. coli. METHODS: In a prospective survey of 1648 diverse food items from 10 retail markets in the Minneapolis-St. Paul area during 2001-2003, selective cultures and disk-diffusion assays for the isolation and characterization of antimicrobial-resistant E. coli and polymerase chain reaction-based assays and O serotyping to define ExPEC-associated traits were performed. RESULTS: E. coli contamination exhibited a prevalence gradient from miscellaneous foods (9%), through beef or pork (69%), to poultry (92%; P

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  • James R Johnson

  • Michael A Kuskowski

  • Kirk Smith

  • Timothy T O'Bryan

  • Sita Tatini

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