Occurrence of ST23 Complex Phylogroup A Escherichia coli Isolates Producing Extended-Spectrum AmpC β-Lactamase in a French Hospital

Occurrence of ST23 Complex Phylogroup A Escherichia coli Isolates Producing Extended-Spectrum AmpC β-Lactamase in a French Hospital Role of the Ser-287-Asn Replacement in the Hydrolysis Spectrum Extension of AmpC β-Lactamases in Escherichia coli Characterization of Cefoxitin-Resistant Escherichia coli Isolates from Recreational Beaches and Private Drinking Water in Canada between 2004 and 2006 Extended-Spectrum Cephalosporinase in Acinetobacter baumannii Comparison of Antimicrobial Resistance Profiles among Extended-Spectrum-β-Lactamase-Producing and Acquired AmpC β-Lactamase-Producing Escherichia coli Isolates from Canadian Intensive Care Units Antimicrobial Resistance Testing of Verocytotoxin-Producing Escherichia coli and First Description of TEM-52 Extended-Spectrum β-Lactamase in Serogroup O26 Surveillance of Community-Based Reservoirs Reveals the Presence of CTX-M, Imported AmpC, and OXA-30 β-Lactamases in Urine Isolates of Klebsiella pneumoniae and Escherichia coli in a U.S. Community CMY-29 and CMY-30, Two Novel Plasmid-Mediated AmpC β-Lactamases Genetic Variability among ampC Genes from Acinetobacter Genomic Species 3 bla _CTX-M Genes in Escherichia coli Strains from Croatian Hospitals Are Located in New ( bla _CTX-M-3a ) and Widely Spread ( bla _CTX-M-3a and bla _CTX-M-15 ) Genetic Structures