Dissemination of pCT-Like IncK Plasmids Harboring CTX-M-14 Extended-Spectrum β-Lactamase among Clinical Escherichia coli Isolates in the United Kingdom

Antimicrobial Agents and Chemotherapy, 05/31/2012

IncK plasmids encoding CTX–M–14 extended–spectrum β–lactamase (ESBL) and highly related to plasmid pCT were detected in 13 of 67 (19%) human clinical isolates of Escherichia coli with a group 9 CTX–M–type ESBL from the United Kingdom and in 2 quality assurance isolates. None of these E. coli strains was related to the cattle strain from which pCT was originally characterized.

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