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Analysis of Listeria monocytogenes in municipal wastewater shows genetic links to human cases, suggesting the potential of targeted surveillance.
Eight wastewater samples were collected from three sites in State College, Pennsylvania, during June and July 2024. Nineteen Listeria monocytogenes were isolated and sequenced. Three isolates were ≤9 SNPs different from human cases deposited in GenBank, highlighting the potential for wastewater-based surveillance to monitor L. monocytogenes outbreaks.
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Horack et al. (2025) studied this question.
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