Characterization of the First Extended-Spectrum Beta-Lactamase-Producing Salmonella Isolate Identified in Canada

摘要

A single Salmonella enterica serovar Typhimurium isolate with an UT2 phage type producing an extended-spectrum beta-lactamase (ESBL) was identified in Canada in 2000. The isolate harbored two plasmids, one containing a bla_TEM-1 gene and the other containing a bla_SHV-2a gene. The ESBL gene was located on a 70-kb transferable plasmid which also carried tetracycline and trimethoprim resistance elements.