Dissemination of <i>mcr-1</i> -Carrying Plasmids among Colistin-Resistant Salmonella Strains from Humans and Food-Producing Animals in Taiwan

Abstract

We detected the colistin resistance gene <i>mcr-1</i> in four <i>Salmonella</i> serovars isolated from humans and animals with diarrhea. The resistance gene was carried on different plasmids. One <i>mcr-1</i>-carrying conjugative plasmid, a variant of pHNSHP45, was disseminated among <i>Salmonella</i> isolates recovered from humans, pigs, and chickens.