Emergence and Clonal Spread of Extended-Spectrum β-Lactamase-Producing <i>Salmonella</i> Infantis Carrying pESI Megaplasmids in Korean Retail Poultry Meat.

ABSTRACT: Background/Objectives:Salmonella is a major cause of foodborne illnesses, with multidrug-resistant (MDR) strains posing significant threats to public health worldwide. This study investigated the prevalence and antimicrobial resistance (AMR) of Salmonella, focusing on extended-spectrum β-lactamase (ESBL)-producing Salmonella in retail poultry meat in Korea. Methods: A total of 300 poultry meat samples were collected nationwide from retail markets. Multi-locus sequence typing, serotyping, and antimicrobial susceptibility testing were performed. Whole-genome sequencing (WGS) analysis was conducted against 28 representative ESBL-producing S. Infantis isolates to identify the genetic characteristics and phylogenetic relationship. Results: Sal

SUBMITTER: Kim Y 

PROVIDER: S-EPMC12024396 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature