Antimicrobial Resistance of Salmonella and Characterization of Two Mcr-1-Harboring Isolates from Pork Products in Guangdong, China

Salmonella is a major foodborne pathogen that poses an increasing threat due to the emer- gence of mcr-1-mediated colistin resistance. However, data on mcr-1-positive Salmonella in pork products are limited. In this study, 457 samples collected in 2023 from pig slaugh- terhouses in Guangdong province were investigated to determine the prevalence and genomic characteristics of mcr-1-positive Salmonella isolates. We found that 92 Salmonella isolates (20.1%, 92/457) were recovered, representing...