Key Findings

The study identified several extended-spectrum beta-lactamase (ESBL) genes, including bla CTX-M-2, bla CTX-M-25, bla CTX-M-15, and bla SHV-2, as well as the AmpC beta-lactamase gene bla CMY-2, in Escherichia coli isolates from diseased food-producing animals in Japan.