Dataset Information

Hypervirulent clonal complex (CC) of Listeria monocytogenes in fresh produce from urban communities.

ABSTRACT:

Introduction

This study aimed to determine the prevalence and virulome of Listeria in fresh produce distributed in urban communities.

Methods

A total of 432 fresh produce samples were collected from farmer's markets in Michigan and West Virginia, USA, resulting in 109 pooled samples. Listeria spp. were isolated and L. monocytogenes was subjected to genoserogrouping by PCR and genotyping by pulsed-field gel electrophoresis (PFGE). Multi-locus sequence typing (MLST) and core-genome multi-locus sequence typing (cgMLST) were conducted for clonal identification.

Results

Forty-eight of 109 samples (44.0%) were contaminated with Listeria spp. L. monocytogenes serotype 1/2a and 4b were recovered from radishes, potatoes, and romaine lettuce. Four clonal complexes (CC) were identified and included hypervirulent CC1 (ST1) and CC4 (ST219) of lineage I as well as CC7 (ST7) and CC11 (ST451) of lineage II. Clones CC4 and CC7 were present in the same romaine lettuce sample. CC1 carried Listeria pathogenicity island LIPI-1 and LIPI-3 whereas CC4 contained LIPI-1, LIPI-3, and LIPI-4. CC7 and CC11 had LIPI-1 only.

Discussion

Due to previous implication in outbreaks, L. monocytogenes hypervirulent clones in fresh produce pose a public health concern in urban communities.

SUBMITTER: Amarasekara NR

PROVIDER: S-EPMC10859469 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature

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Publications

Hypervirulent clonal complex (CC) of <i>Listeria monocytogenes</i> in fresh produce from urban communities.

Amarasekara Nirosha Ruwani NR Swamy Amrita Subramanya AS Paudel Sumit Kumar SK Jiang Wentao W Li KaWang K Shen Cangliang C Zhang Yifan Y

Frontiers in microbiology 20240129

<h4>Introduction</h4>This study aimed to determine the prevalence and virulome of <i>Listeria</i> in fresh produce distributed in urban communities.<h4>Methods</h4>A total of 432 fresh produce samples were collected from farmer's markets in Michigan and West Virginia, USA, resulting in 109 pooled samples. <i>Listeria</i> spp. were isolated and <i>L. monocytogenes</i> was subjected to genoserogrouping by PCR and genotyping by pulsed-field gel electrophoresis (PFGE). Multi-locus sequence typing (M ...[more]

PMID: 38348192

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