Characterization of plasmids harboring bla

Resistance to extended-spectrum cephalosporins is prevalent in French pig E. coli isolates. The aim of this study was to characterize the plasmids and genes present in pathogenic and commensal extended-spectrum cephalosporins -resistant isolates. The resistance plasmids of 26 strains were sequenced and then analyzed to identify resistance and virulence genes. Results showed that resistance to extended-spectrum cephalosporins in French pig E. coli isolates is-as in other food animals in France-mainly carried by highly similar bla