Chromosome-Borne CTX-M-65 Extended-Spectrum β-Lactamase-Producing Salmonella enterica Serovar Infantis, Taiwan.

A CTX-M-65‒producing Salmonella enterica serovar Infantis clone, probably originating in Latin America and initially reported in the United States, has emerged in Taiwan. Chicken meat is the most likely primary carrier. Four of the 9 drug resistance genes have integrated into the chromosome: bla, tet(A), sul1, and aadA1.