Prevalence and characteristics of <i>Listeria monocytogenes</i> in ready-to-eat chilled pot skewer products.

ABSTRACT: Listeria monocytogenes contamination in ready-to-eat chilled pot skewer products represent a significant public health concern in China. This study assessed the prevalence, molecular characteristics, and potential transmission risks of L. monocytogenes in 340 commercially available chilled pot skewer samples collected in 2019 and 2021. Bacterial isolation revealed an overall contamination rate of 20.6% (70/340), with no significant differences among meat-based (15.5%), vegetarian (19.5%), or mixed meat-vegetable (26.5%) products. Serogroups 1/2b, 3b, 7 (47.4%) and 1/2a, 3 (35.5%) predominated. Multilocus sequence typing (MLST) identified high-risk clones ST87 (27.6%) and ST121 (22.4%)-both associated with listeriosis outbreaks-along with rare lineages such as ST378 (1.3%). Co

SUBMITTER: Liu Y 

PROVIDER: S-EPMC12536008 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature