Microbiological surveillance reveals colistin-resistant and mcr-1-positive Escherichia coli in European cattle, highlighting emerging multidrug resistance in food animals.
Of 150 Escherichia coli strains we cultured from specimens taken from cattle in Europe, 3 had elevated MICs against colistin. We assessed all 3 strains for the presence of the plasmid-mediated mcr-1 gene and identified 1 isolate as mcr-1-positive and co-resistant to β-lactam, florfenicol, and fluoroquinolone antimicrobial compounds.
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Brennan et al. (2016) studied this question.
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