该研究旨在使用文献数据的荟萃(Meta)分析估计中国发酵肉制品单增李斯特菌的污染率。选择2011—2022年来自5个数据库的总计34篇文献。根据随机效应模型估计,单增李斯特菌的综合流行率为4.1%(95% CI:2.3%~5.7%),其中发酵香肠、发酵火腿、中式腊肉单增李斯特菌综合流行率分别为3.1%(95% CI:2.4%~3.9%)、5.9%(95% CI:4.2%~9.3%)、3.9%(95% CI:2.2%~6.1%)。从地区来看,西南地区单增李斯特菌流行率最高达到5.2%(95% CI:2.1%~9.3%)。单增李斯特菌最主要的血清型是4b、1/2a、1/2b和1/2c。就机构类型而言,纳入的研究样本绝大多数来自零售市场。通过了解发酵肉制品单增李斯特菌流行水平的差异可以清楚其在公共健康安全方面的潜在风险,有助于对发酵肉制品单增李斯特菌进行可控监测,指导主管部门、行业和其他利益相关者对其进行有效控制。
Listeria monocytogenes is a foodborne pathogen that can cause listeriosis, especially in fermented meat products. This study aimed to estimate the contamination rate of L.monocytogenes in fermented meat products in China using a meta-analysis of literature data.A total of 34 literatures from five databases were selected from 2011 to 2022.Based on the random effect model, the comprehensive prevalence rate of L.monocytogenes was estimated to be 4.1% (95% CI:2.3%-5.7%), of which L.monocytogenes comprehensive prevalence rates of fermented sausage, fermented ham, and Chinese style cured meat were 3.1% (95% CI:2.4%-3.9%), 5.9% (95% CI:4.2%-9.3%), and 3.9% (95% CI:2.2%-6.1%), respectively.Regionally, the highest prevalence of L.monocytogenes was 5.2% (95% CI:2.1%-9.3%) in Southwest China.The main serotypes of L.monocytogenes were 4b, 1/2a, 1/2b, and 1/2c.In terms of types of institutions, the vast majority of the included research samples were from the retail market.By understanding the differences in the prevalence levels of L.monocytogenes in fermented meat products, the potential risks to public health and safety could be clarified, which would help to control L.monocytogenes in fermented meat products and guide the competent authorities, industry, and other stakeholders to develop a more effective control method.
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