Prevalence of mcr-1 in commensal Escherichia coli from French livestock, 2007 to 2014

A Perrin-Guyomard 1 M Bruneau 1 P Houée 1 K Deleurme 1 P Legrandois 1 C Poirier 1 C Soumet 1 P Sanders 1
1 ANSES - ANSES - Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail
Abstract : Colistin resistance was investigated in 1,696 isolates collected from 2007 to 2014 within the frame of the French livestock antimicrobial resistance surveillance programme. The mcr-1 gene was detected in all com-mensal Escherichia coli isolates with a minimum inhibi-tory concentration to colistin above the 2 mg/L cutoff value (n=23). In poultry, mcr-1 prevalence was 5.9% in turkeys and 1.8% in broilers in 2014. In pigs, investigated in 2013, this prevalence did not exceed 0.5%. These findings support that mcr-1 has spread in French livestock. We report mcr-1 prevalence data in commensal Escherichia coli isolated from French livestock from 2007 to 2014.
Keywords : livestock bacteria colistin antibiotic resistance
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A Perrin-Guyomard, M Bruneau, P Houée, K Deleurme, P Legrandois, et al.. Prevalence of mcr-1 in commensal Escherichia coli from French livestock, 2007 to 2014. Eurosurveillance, European Centre for Disease Prevention and Control, 2016, 21 (6), pp.1-3. ⟨10.2807/1560-7917.ES.2016.21.6.30135⟩. ⟨anses-01347790⟩

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