Predominance of L. monocytogenes Lineage I Clones in Wastewater, Ruminants, and Natural Environments.

ABSTRACT: Listeria monocytogenes is a saprophytic bacterium and a foodborne pathogen of humans and animals. Little is known about its distribution and genetic diversity across different environments within the same geographical region. We conducted a large-scale longitudinal study in southeastern Spain monitoring Listeria spp. in untreated wastewater, ruminant farms, and natural environments over four seasons (N = 1490 samples, N = 545 isolates) and in food and food-processing environments (N = 7395 samples, N = 255 isolates). Listeria spp. were more abundant in host-associated than natural environments, and non-pathogenic Listeria were more prevalent than L. monocytogenes in both niches. L. monocytogenes was detected in 42.7%, 11.4%, 4.2%, and 3.4% of wastewater, ruminant farms, natural environment

SUBMITTER: Markovich Y 

PROVIDER: S-EPMC12415317 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature