Detection of colistin resistance mcr- 1 gene in Salmonella enterica serovar Rissen isolated from mussels, Spain, 2012- to 2016

Euro Surveill. 2019 Apr;24(16):1900200. doi: 10.2807/1560-7917.ES.2019.24.16.1900200.

Abstract

Nineteen Salmonella strains were isolated from 5,907 randomly selected mussel samples during a monitoring programme for the presence of Salmonella in shellfish in Galicia, north-west Spain (2012-16). Serovars, sequence type and antimicrobial resistance genes were determined through genome sequencing. Presence of the mcr-1 gene in one strain belonging to serovar Rissen and ST-469 was identified. The mcr-1 gene had not been isolated previously in environmental Salmonella isolated from mussels in Spain.

Keywords: Salmonella; antimicrobial resistance; mcr-1 gene; mussels; shellfish; whole genome sequencing.

MeSH terms

  • Animals
  • Anti-Bacterial Agents / pharmacology*
  • Bivalvia / microbiology*
  • Colistin / pharmacology*
  • Drug Resistance, Bacterial / genetics*
  • Escherichia coli Proteins
  • Humans
  • Microbial Sensitivity Tests
  • Polymerase Chain Reaction
  • Salmonella enterica / genetics
  • Salmonella enterica / isolation & purification*
  • Serogroup
  • Whole Genome Sequencing

Substances

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