Within this systematically collected, geographically distributed sample of recent retail meat isolates, the carriage of extraintestinal pathogenic E. coli virulence genes in antimicrobial-resistant and antimicrobial-susceptible E. coli appeared similar, whereas isolates from different types of meat differed, consistent with on-farm acquisition of resistance within host species-specific E. coli populations. A substantial minority of meat-source E. coli (whether susceptible or resistant) may represent potential human pathogens.
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