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Journal Articles Microbiology Spectrum Year : 2022

Genomic Surveillance of Listeria monocytogenes in Taiwan, 2014 to 2019

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Abstract

Listeria monocytogenes is a life-threatening foodborne pathogen. Here, we report the genomic characterization of a nationwide dataset of 411 clinical and 82 food isolates collected in Taiwan between 2014 and 2019. The observed incidence of listeriosis increased from 0.83 to 7 cases per million population upon implementation of mandatory notification in 2018. Pregnancy-associated cases accounted for 2.8% of human listeriosis and all-cause 7-day mortality was of 11.9% in nonmaternal-neonatal listeriosis. L. monocytogenes was isolated from 90% of raw pork and 34% of chicken products collected in supermarkets. Sublineages SL87, SL5, and SL378 accounted for the majority (65%) of clinical cases. SL87 and SL378 were also predominant (57%) in food products. Five cgMLST clusters accounted for 57% clinical cases, suggesting unnoticed outbreaks spanning up to 6 years. Mandatory notification allowed identifying the magnitude of listeriosis in Taiwan. Continuous real-time genomic surveillance will allow reducing contaminating sources and disease burden.
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Origin : Publication funded by an institution
Licence : CC BY - Attribution

Dates and versions

pasteur-03922803 , version 1 (04-01-2023)
pasteur-03922803 , version 2 (06-01-2023)

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Attribution - CC BY 4.0

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Yu-Huan Tsai, Alexandra Moura, Zi-Qi Gu, Jui-Hsien Chang, Ying-Shu Liao, et al.. Genomic Surveillance of Listeria monocytogenes in Taiwan, 2014 to 2019. Microbiology Spectrum, 2022, 10 (6), ⟨10.1128/spectrum.01825-22⟩. ⟨pasteur-03922803v2⟩

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