杨艳娜, 郑燃燃, 崔燕, 张萌. 2019-2021年北京市通州区重点场所后厨工作人员诺如病毒隐性感染状况研究[J]. 疾病监测, 2023, 38(2): 163-165. DOI: 10.3784/jbjc.202208230370
引用本文: 杨艳娜, 郑燃燃, 崔燕, 张萌. 2019-2021年北京市通州区重点场所后厨工作人员诺如病毒隐性感染状况研究[J]. 疾病监测, 2023, 38(2): 163-165. DOI: 10.3784/jbjc.202208230370
Yang Yanna, Zheng Ranran, Cui Yan, Zhang Meng. Study of asymptomatic norovirus infection in kitchen workers in key places in Tongzhou district, Beijing, 2019−2021[J]. Disease Surveillance, 2023, 38(2): 163-165. DOI: 10.3784/jbjc.202208230370
Citation: Yang Yanna, Zheng Ranran, Cui Yan, Zhang Meng. Study of asymptomatic norovirus infection in kitchen workers in key places in Tongzhou district, Beijing, 2019−2021[J]. Disease Surveillance, 2023, 38(2): 163-165. DOI: 10.3784/jbjc.202208230370

2019-2021年北京市通州区重点场所后厨工作人员诺如病毒隐性感染状况研究

Study of asymptomatic norovirus infection in kitchen workers in key places in Tongzhou district, Beijing, 2019−2021

  • 摘要:
      目的  调查2019—2021年北京市通州区学校及托幼机构、餐饮服务单位等重点场所后厨工作人员诺如病毒隐性感染状况,为科学开展诺如疫情防控提供依据。
      方法  采用简单随机抽样的方法,抽取通州区餐饮服务单位、学校、托幼机构、建筑工地、宾馆住宿场所等的后厨工作人员(冷荤后厨工作人员优先)为研究对象,采集其肛拭子或粪便样本,使用实时荧光RT-PCR试剂盒对样本进行诺如病毒核酸检测,并采用描述性方法分析其隐性感染状况。
      结果  共采集552家单位,3880份样本,检出阳性15份,其中GⅠ组1份,GⅡ组14份,隐性感染率为0.39%(15/3880),其中男性隐性感染率为0.30%(5/1656);女性隐性感染率为0.45%(10/2224)。 18岁以下及60岁以上年龄组均无隐性感染者;19~岁年龄组2055人,阳性率为0.34%(7/2055),46~岁年龄组1637人,阳性率为0.49%(8/1637)。 新型冠状病毒肺炎(新冠肺炎)疫情发生前2019年采集肛拭子样本100份,隐性感染率为1.00%(1/100);新冠肺炎疫情发生后,2020年采集肛拭子样本2805份,隐性感染率为0.39%(11/2805);2021年采集肛拭子样本975份,隐性感染率为0.31%(3/975)。
      结论  北京市通州区重点场所后厨工作人员诺如病毒隐性感染率与北京市同期水平基本持平,新冠疫情防控期间,重点场所后厨工作人员中存在诺如病毒隐性感染,感染率较疫情发生前低。

     

    Abstract:
      Objective   To investigate the prevalence of asymptomatic norovirus infections status in kitchen workers in schools, child care settings, and catering service units and other key places in Tongzhou district of Beijing from 2019 to 2021, and provide evidence for scientific prevention and control of norovirus infection.
      Methods   The simple random sampling method was used to select the kitchen workers, especially the kitchen workers preparing cold dish, from catering service units, schools, childcare settings, construction sites, hotels as study subjects,and their anal swabs or stool samples were collected for norovirus nucleic acid detection by fluorescence quantitative PCR. Descriptive method was used to analyze the asymptomatic norovirus infection status of the kitchen workers.
      Results   A total of 3880 samples were collected from 552 units, and 15 norovirus positive cases were detected, including 1 sample positive for GⅠ and 14 samples positive for GⅡ. The asymptomatic norovirus infection rate was 0.39% (15/3880),in which 0.30% (5/1656) in man, and 0.45%(10/2224) in women. No asymptomatic infections were detected in age groups < 18 years and > 60 years, and 2055 cases were detected in age group 19− years, with a positive rate of 0.34% (7/2055), and 1637 cases were detected in age group 46− years, with a positive rate of 0.49% (8/1637). In 2019 when no COVID-19 epidemic occurred, the asymptomatic norovirus infection rate was 1.00% (1/100), but the asymptomatic norovirus infection rate was 0.39% (11/2805)in 2020 and 0.31%(3/975)in 2021 in the context of COVID-19 epidemic.
      Conclusion   The asymptomatic norovirus infection rate in kitchen workers in key places in Tongzhou was similar to the average level in Beijing during the same period. In COVID-19 epidemic period, the asymptomatic norovirus infection rate was lower than that before the epidemic.

     

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