bla NDM-5 Carried by an IncX3 Plasmid in Escherichia coli Sequence Type 167

Abstract
blaNDM-5 was found in Escherichia coli strain 0215 from a Chinese patient without travel history. Genomic sequencing and conjugation experiments were performed. Strain 0215 belonged to sequence type 167 (ST167) and had other resistance determinants, including blaTEM-135, blaCTX-M-14, and aac(6′)-Ib. blaNDM-5 was carried by a 47-kb self-transmissible IncX3 plasmid and was in a complex genetic context similar to that of blaNDM-1 on IncX3 plasmids. IncX3 plasmids might have emerged as a common vehicle mediating the spread of blaNDM.

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