Characterization of <i>Listeria monocytogenes</i> Isolates from Pork Production in Southern Sonora, Mexico: Serotyping, Antimicrobial Resistance, Chitosan Susceptibility, and Pathogenicity in a Chicken Embryo Model.

ABSTRACT: Listeria monocytogenes is often found in pork intestines and can contaminate pork production, posing a risk to consumers. This study aimed to characterize 16 L. monocytogenes isolates from fresh and packaged pork loin, identify their serotypes, and assess antibiotic resistance. To evaluate chitosan susceptibility as a potential strategy to control L. monocytogenes in the pork industry and to determine its effectiveness in a eukaryotic model to demonstrate pathogenicity. Among the 16 isolates examined, 2 were identified as 1/2a, 12 as 1/2b, 2 as 4b, and 2 could not be assigned a serotype. Variations were observed in their pathogenicity factors. Some isolates were lacking in some virulence factors. In the antibiotic assays, all isolates demonstrated resistance to at leas

SUBMITTER: Figueroa-Lopez AM 

PROVIDER: S-EPMC12427709 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature