Listeria monocytogenes Prevalence and Characteristics in Retail Raw Foods in China

PloS One
Shi WuHuijuan Hu

Abstract

The prevalence and levels of Listeria monocytogenes in retail raw foods covering most provincial capitals in China were studied with testing of 1036 samples of vegetables, edible mushrooms, raw meat, aquatic products and quick-frozen products from September 2012 to January 2014. The total prevalence of Listeria monocytogenes was 20.0% (207/1036), and the most probable number (MPN) values of 65.7% of the positive samples ranged from 0.3 to 110 MPN/g. Geographical differences were observed in this survey, and the results of both qualitative and quantitative methods indicated that the levels in the samples from North China were higher than those in the samples from South China. A total of 248 isolates were analyzed, of which approximately half belonged to molecular serogroup 1/2a-3a (45.2%), followed by 1/2b-3b-7 (30.6%), 1/2c-3c (16.1%), 4b-4d-4e (5.2%) and 4a-4c (2.8%). Most of the isolates carried hly (100%), inlB (98.8%), inlA (99.6%), inlC (98.0%) and inlJ (99.2%), and 44.8% of the isolates were llsX-positive. Seventeen epidemic clones (ECs) were detected, with 7 strains belonging to ECI (2.8%) and 10 belonging to ECIII (4.03%). Resistance to clindamycin (46.8%) was commonly observed, and 59 strains (23.8%) were susceptible t...Continue Reading

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Citations

Jun 8, 2017·Emerging Microbes & Infections·Yan WangChangyun Ye
Aug 21, 2018·Foodborne Pathogens and Disease·Weiwei LiYunchang Guo
May 17, 2019·Foodborne Pathogens and Disease·Yage WangHe Yan
Feb 12, 2020·Journal of Food Protection·Elżbieta MaćkiwJacek Postupolski
May 31, 2016·Journal of Applied Microbiology·T GelbíčováR Karpíšková
Dec 14, 2018·Proceedings of the National Academy of Sciences of the United States of America·Mélodie DuvalPascale Cossart
Nov 14, 2019·International Journal of Environmental Research and Public Health·Chidozie Declan Iwu, Anthony Ifeanyi Okoh
Nov 20, 2019·Emerging Infectious Diseases·Weiwei LiYunchang Guo
May 30, 2019·Frontiers in Microbiology·Xiaoai ZhangXiaochen Ma
Sep 1, 2018·Comprehensive Reviews in Food Science and Food Safety·Amin N OlaimatRichard A Holley
Jan 14, 2021·International Journal of Environmental Research and Public Health·Liyabona MpondoAnthony Ifeanyi Okoh

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Methods Mentioned

BETA
electrophoresis
PCR

Software Mentioned

SPSS

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