李志平, 吕守明, 李秋玲, 甘亚弟, 高艳青, 唐金凤, 都恩环, 陈奕彤, 房宁, 韩林, 王希峰. 2022年北京市某镇一起集中式供水污染引起的诺如病毒急性胃肠炎突发公共卫生事件调查[J]. 凯发娱乐加盟代理. DOI: 10.3784/jbjc.202302140041
引用本文: 李志平, 吕守明, 李秋玲, 甘亚弟, 高艳青, 唐金凤, 都恩环, 陈奕彤, 房宁, 韩林, 王希峰. 2022年北京市某镇一起集中式供水污染引起的诺如病毒急性胃肠炎突发公共卫生事件调查[J]. 凯发娱乐加盟代理. DOI: 10.3784/jbjc.202302140041
Li Zhiping, Lyu Shouming, Li Qiuling, Gan Yadi, Gao Yanqing, Tang Jinfeng, Du Enhuan, Chen Yitong, Fang Ning, Han Lin, Wang Xifeng. Investigation of a public health emergency of acute gastroenteritis associated with norovirus contamination in centralized water supply system in a town of Beijing, in 2022[J]. Disease Surveillance. DOI: 10.3784/jbjc.202302140041
Citation: Li Zhiping, Lyu Shouming, Li Qiuling, Gan Yadi, Gao Yanqing, Tang Jinfeng, Du Enhuan, Chen Yitong, Fang Ning, Han Lin, Wang Xifeng. Investigation of a public health emergency of acute gastroenteritis associated with norovirus contamination in centralized water supply system in a town of Beijing, in 2022[J]. Disease Surveillance. DOI: 10.3784/jbjc.202302140041

2022年北京市某镇一起集中式供水污染引起的诺如病毒急性胃肠炎突发公共卫生事件调查

Investigation of a public health emergency of acute gastroenteritis associated with norovirus contamination in centralized water supply system in a town of Beijing, in 2022

  • 摘要:
    目的 调查2022年北京市某镇一起诺如病毒引起的急性胃肠炎突发公共卫生事件的感染来源、传播途径,分析可能的危险因素,提出有针对性的防控建议及措施,探讨疫情处置经验。
    方法 采用现场流行病学方法开展调查,用描述性流行病学方法描述病例三间分布和临床表现,采集病例、外环境涂抹和水样标本进行实验室检测,通过病例对照研究分析疫情可能发生的危险因素。
    结果 共搜索到324例病例,分布在6个社区中的28个小区和2个厂区,罹患率为1.82%(324/17 843),呈现一定的空间聚集性。 病例临床表现以腹泻为主(99.69%),无重症和死亡病例;病例空间分布具有一定的聚集性倾向;病例-对照研究结果显示,饮用生水的发病风险是未饮用生水的4.9倍 (比值比=4.929, 95% 置信区间:1.612~15.071)。 30份病例便标本、3份环境涂抹标本和12份水样样本检出诺如病毒。
    结论 本次事件由集中式供水被诺如病毒污染引起,饮用生水是本次疫情发生的危险因素。 建议相关部门加强水质监测,定期开展供水安全检查,及早发现可能的污染源,保护公众健康。

     

    Abstract:
    Objective To investigate the infection sources and transmission routes of a public health emergency of acute gastroenteritis caused by norovirus in a town in Beijing in 2022, analyze possible risk factors, put forward targeted prevention and control suggestions.
    Methods Field epidemiological survey was carried out, and descriptive epidemiological analysis was conducted to describe the distributions and clinical manifestations of the cases, Stool samples or anal swabs from the cases, external environmental samples and water samples were collected for the detection of norovirus nucleic acid. A case-control study was applied to identify risk factors.
    Results A total of 324 cases were identified in 28 local communities and 6 communities in 2 factories, the attack rate was 1.82% (324/17843). The case distribution had obvious spatial clustering. The main clinical manifestations of the cases were diarrhea (99.69%), and no severe or fatal cases were reported . Case-control studies showed that the risk for the infection in those drinking unboiled water was 4.9 times higher than that in non-exposure group (OR: 4.929, 95%CI: 1.612–15.071). Norovirus was detected in 30 stool samples, 3 environmental smear samples and 12 water samples.
    Conclusion This outbreak was caused by the contamination of norovirus in centralized water supplies, drinking unboiled water was a risk factor. It is suggested to strengthen surveillance for water quality, carry out regular inspections of water supply safety for the timely identification of possible contamination sources and protect public health.

     

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