湖州市水产品和环境样品中副溶血性弧菌污染及其影响因素分析
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(湖州市疾病预防控制中心,浙江 湖州 313000)

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袁瑞 男 医师 研究方向为公共卫生监测 E-mail:yuanrui751@163.com通信作者:┣┣(中)通信作者┫┫张鹏 男 副主任医师 研究方向为公共卫生监测 E-mail:hzjkzp@163.com

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A study on the distribution characteristics and influencing factors analysis of Vibrio parahaemolyticus contamination in aquatic products and its environment samples in Huzhou
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(Huzhou Center for Disease Control and Prevention,Zhejiang Huzhou 313000,China)

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    摘要:

    目的 了解湖州市水产品及其环境样品中副溶血性弧菌(VP)污染情况,并探讨淡水产品中VP污染的可能影响因素。方法 2014—2017年采集湖州市水产品及其环境样品1 388份,分别进行定性VP检测、O群血清学分型和tlh、tdh、trh三种毒力基因型检测,比较分析VP在淡水产品、海产品及其生长环境中的分布特征,进一步分析湖州市淡水产品中VP污染的可能影响因素。结果 水产品中VP检出率为25.68%(265/1 032),淡水产品检出率(30.33%,175/577)明显高于海产品(19.78%,90/455),差异有统计学意义(χ2=14.83,P<0.001)。环境样品中,水底沉积物和存养水体的VP检出率分别为0.86%(1/116)和13.71%(17/124),养殖水体中未有VP检出。经多因素Logistic回归分析,水产品种类、保存方式、流通环节和时间在一定程度上影响VP污染淡水产品。在毒力基因型分布上,水产品与环境样品间差异无统计学意义(P>0.05),均以tlh+tdh-trh-为主。在血清型分布上,淡水产品与海产品间差异无统计学意义(P>0.05),均以O3血清型为主,其次为O4血清型。结论 湖州市淡水产品中副溶血性弧菌污染严重,其污染主要来自流通环节中的交叉污染,应进一步加强监测与管理。

    Abstract:

    Objective To understand the distribution characteristics of Vibrio parahaemolyticus (VP) in aquatic products and their environment samples in Huzhou, then to explore possible influencing factors of VP pullution in freshwater products. Methods One thousand three hundred and eighty-eight aquatic products and their environment samples were collected in Huzhou between 2014 to 2017. Aquatic products and environment samples were tested for VP, O group of serum and the virulence genes tlh, tdh and trh, respectively. To the distribution characteristics of VP in freshwater products, seafoods and environment samples was analyzed and compared. The possible influencing factors of VP pollution in freshwater products was further analyzed in Huzhou City. Results The rate of VP in aquatic products was 25.68%(265/1 032), of which freshwater products and seafood were 30.33% (175/577) and 19.78% (90/455) respectively, and the difference was statistically significant (χ2=14.83, P<0.001). The rates of VP in subsoil sediment and water body from sales links were 0.86% (1/116) and 13.71% (17/124) respectively. There is no VP detected in the water body from breeding links. By multivariate logistic regression analysis, the aquatic species, preservation method, sales links and time affected VP pollution of freshwater products to a certain extent. There was no significant difference in the distribution of virulence genotypes between aquatic products and environmental samples (P>0.05), all of which were dominated by tlh+tdh-trh-. In the serotype distribution, there was no significant difference between freshwater products and seafood (P>0.05), which O3 were mainly serotypes, followed by O4 serotypes. Conclusion Freshwater products was seriously polluted by VP in Huzhou, and pollution mainly comes from cross-contamination in the sales links. Monitoring and management should be further strengthened.

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袁瑞,付云,宋臻鹏,张鹏.湖州市水产品和环境样品中副溶血性弧菌污染及其影响因素分析[J].中国食品卫生杂志,2018,30(5):526-531.

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  • 收稿日期:2018-05-15
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  • 在线发布日期: 2018-09-29
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