Comparative analysis of IncHI2 plasmids carrying blaCTX-M-2 or blaCTX-M-9 from Escherichia coli and Salmonella enterica strains isolated from poultry and humans

Salmonella enterica blaCTX-M-2 and blaCTX-M-9 plasmid backbones from isolates from Belgium and France were analyzed. The bla CTX-M-2 plasmids from both human and poultry isolates were related to the IncHI2 pAPEC-O1-R plasmid, previously identified in the United States in avian Escherichia coli strains; the blaCTX-M-9 plasmids were closely related to the IncHI2 R478 plasmid. Copyright © 2007, American Society for Microbiology. All Rights Reserved