Colistin resistance in<i>Salmonella</i>and<i>Escherichia coli</i>isolates from a pig farm in Great Britain

Abstract

Identification of the mcr-1 gene in Enterobacteriaceae from pigs confirms its presence in livestock in Great Britain. The results suggest dissemination of resistance through different horizontally transferable elements. The in vitro transfer of multiple plasmids carrying colistin and other resistances from the Salmonella isolate underlines the potential for wider dissemination and recombination.