Locally Acquired mcr-1 in Escherichia coli, Australia, 2011 and 2013

Abstract

We identified discrete importation events of the mcr-1 gene on incompatibility group IncI2 plasmids in Escherichia coli isolated from patients in New South Wales, Australia, in 2011 and 2013. mcr-1 is present in a small minority of colistin-resistant Enterobacteriaceae and appears not to be established locally.

Keywords

• antimicrobial resistance
• colistin
• Escherichia coli
• plasmid
• mcr-1 gene
• mobile colistin resistance gene