Identification of four patients with colistin-resistant Escherichia coli containing the mobile colistin resistance mcr-1 gene from a single health system in Michigan

Infect Control Hosp Epidemiol. 2019 Sep;40(9):1059-1062. doi: 10.1017/ice.2019.177. Epub 2019 Jul 15.

Abstract

Clinical Enterobacteriacae isolates with a colistin minimum inhibitory concentration (MIC) ≥4 mg/L from a United States hospital were screened for the mcr-1 gene using real-time polymerase chain reaction (RT-PCR) and confirmed by whole-genome sequencing. Four colistin-resistant Escherichia coli isolates contained mcr-1. Two isolates belonged to the same sequence type (ST-632). All subjects had prior international travel and antimicrobial exposure.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Aged
  • Colistin / pharmacology*
  • Drug Resistance, Bacterial / genetics*
  • Escherichia coli / genetics*
  • Escherichia coli Infections / genetics*
  • Escherichia coli Infections / microbiology
  • Escherichia coli Proteins / genetics*
  • Female
  • Humans
  • Male
  • Michigan
  • Microbial Sensitivity Tests
  • Whole Genome Sequencing
  • Young Adult

Substances

  • Escherichia coli Proteins
  • MCR-1 protein, E coli
  • Colistin