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

Emerg Infect Dis. 2023 Aug;29(8):1634-1637. doi: 10.3201/eid2908.230472.

Abstract

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: blaCTX-M-65, tet(A), sul1, and aadA1.

Keywords: CTX-M-65; DNA transposable elements; Salmonella enterica; Taiwan; bacteria; chickens; chromosome; chromosome-borne; extended-spectrum β-lactamase; multidrug resistance; plasmid; serovar Infantis.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Anti-Bacterial Agents / pharmacology
  • Chickens
  • Chromosomes
  • Drug Resistance, Multiple, Bacterial / genetics
  • Plasmids
  • Salmonella
  • Salmonella enterica* / genetics
  • Serogroup
  • Taiwan / epidemiology
  • United States
  • beta-Lactamases* / genetics

Substances

  • beta-Lactamases
  • Anti-Bacterial Agents

Supplementary concepts

  • Salmonella enterica subsp. enterica