Emergence of NDM-5- and MCR-1-Producing Escherichia coli Clones ST648 and ST156 from a Single Muscovy Duck (Cairina moschata)

Antimicrob Agents Chemother. 2016 Oct 21;60(11):6899-6902. doi: 10.1128/AAC.01365-16. Print 2016 Nov.

Abstract

Two Escherichia coli clones (sequence type 648 [ST648] and ST156) that coproduce NDM-5 and MCR-1 were detected from a single fowl in China. The blaNDM-5 gene was found on the two indistinguishable IncX3 plasmids from the two different E. coli isolates, whereas the mcr-1 gene was located on IncHI2 and IncI2 plasmids, respectively, suggesting that blaNDM-5 and mcr-1 have spread in avian intestinal flora. Also, the two strains harbor blaTEM-1, blaCTX-M-55, fosA3, and aac(6')-Ib The multiresistant E. coli strains (especially the epidemic clone ST648) might raise a potential threat to human health via food chain transmission.

MeSH terms

  • Animals
  • China
  • Drug Resistance, Multiple, Bacterial / drug effects*
  • Drug Resistance, Multiple, Bacterial / genetics
  • Ducks / microbiology
  • Escherichia coli / drug effects*
  • Escherichia coli / genetics*
  • Escherichia coli / isolation & purification
  • Escherichia coli Proteins / genetics*
  • Microbial Sensitivity Tests
  • beta-Lactamases / genetics*

Substances

  • Escherichia coli Proteins
  • MCR-1 protein, E coli
  • beta lactamase NDM-5, E coli
  • beta-Lactamases