Key Findings

The study identified bla CTX-M-14, bla CTX-M-55, bla CTX-M-65, and bla CMY-2 as the primary beta-lactamase genes contributing to cefotaxime resistance in Salmonella isolates. These genes were found in various Salmonella serotypes, with bla CTX-M-65 being exclusive to S. 4,[5],12:i:- strains.