First report of mcr-1-harboring Salmonella enterica serovar Schwarzengrund isolated from poultry meat in Brazil

Diagn Microbiol Infect Dis. 2019 Apr;93(4):376-379. doi: 10.1016/j.diagmicrobio.2018.10.016. Epub 2018 Nov 1.

Abstract

Brazilian poultry meat samples were screened for colistin-resistant Salmonella enterica. Sixty Salmonella isolates were tested for in vitro colistin resistance and mcr-1, mcr-2, mcr-3 and mcr-4 genes. Two isolates harbored the mcr-1 gene and whole-genome analysis determined the serovar to be Schwarzengrund, ST96, harboring the IncX4 plasmid. This is the first report of mcr-1-harboring Salmonella enterica serovar Schwarzengrund in Brazil.

Keywords: Colistin resistance; Plasmid; Poultry; Salmonella enterica; Schwarzengrund.

MeSH terms

  • Animals
  • Anti-Bacterial Agents / pharmacology
  • Brazil
  • Colistin / pharmacology
  • Drug Resistance, Bacterial*
  • Escherichia coli Proteins / genetics*
  • Genotype
  • Meat / microbiology*
  • Microbial Sensitivity Tests
  • Multilocus Sequence Typing
  • Plasmids / analysis*
  • Poultry
  • Salmonella enterica / drug effects*
  • Salmonella enterica / genetics
  • Salmonella enterica / isolation & purification*
  • Serogroup
  • Whole Genome Sequencing

Substances

  • Anti-Bacterial Agents
  • Escherichia coli Proteins
  • MCR-1 protein, E coli
  • Colistin