孔超, 何佳谕, 王文胜, 贺嫦悠, 李艳, 梁鸿镖, 胡雅飞, 林海江, 林春萍. 浙江省台州市1起新型冠状病毒肺炎聚集性疫情调查[J]. 上海预防医学, 2021, 33(6): 471-476. DOI: 10.19428/j.cnki.sjpm.2021.20621
引用本文: 孔超, 何佳谕, 王文胜, 贺嫦悠, 李艳, 梁鸿镖, 胡雅飞, 林海江, 林春萍. 浙江省台州市1起新型冠状病毒肺炎聚集性疫情调查[J]. 上海预防医学, 2021, 33(6): 471-476. DOI: 10.19428/j.cnki.sjpm.2021.20621
KONG Chao, HE Jia-yu, WANG Wen-sheng, HE Chang-you, LI Yan, LIANG Hong-biao, HU Ya-fei, LIN Hai-jiang, LIN Chun-ping. Epidemiological investigation on a cluster epidemic of COVID-19 in Taizhou, Zhejiang Province[J]. Shanghai Journal of Preventive Medicine, 2021, 33(6): 471-476. DOI: 10.19428/j.cnki.sjpm.2021.20621
Citation: KONG Chao, HE Jia-yu, WANG Wen-sheng, HE Chang-you, LI Yan, LIANG Hong-biao, HU Ya-fei, LIN Hai-jiang, LIN Chun-ping. Epidemiological investigation on a cluster epidemic of COVID-19 in Taizhou, Zhejiang Province[J]. Shanghai Journal of Preventive Medicine, 2021, 33(6): 471-476. DOI: 10.19428/j.cnki.sjpm.2021.20621

浙江省台州市1起新型冠状病毒肺炎聚集性疫情调查

Epidemiological investigation on a cluster epidemic of COVID-19 in Taizhou, Zhejiang Province

  • 摘要:
    目的分析浙江省台州市1起新型冠状病毒肺炎(COVID-19)工作场所及家庭聚集性疫情的流行病学特征,查明感染来源和传播链,为改进COVID-19防控措施提供依据。
    方法采用现场流行病学调查方法,对该起聚集性疫情中的确诊病例及密切接触者进行流行病学调查,对调查资料和数据的流行病学特征进行描述性分析;采用实时荧光定量PCR(RT-PCR)法对采集的呼吸道标本进行新型冠状病毒核酸检测。
    结果本起聚集性疫情涉及1家美容门诊部工作场所和3户家庭,流行病学关联病例18例,其中确诊病例16例、无症状感染者2例;男性7例,女性11例,年龄最小3岁、最大65岁,中位数32岁。其中员工患病率为9.80%(10/102),家庭患病率为7.70%(5/78),客户患病率为0.58%(1/173)。无症状感染者呼吸道核酸阳性持续时间最长达2个月以上。
    结论引起该起COVID-19聚集性疫情的原因为工作场所环境相对密闭、人员密集,未及时发现输入性传染源,导致点源暴发,并经家庭密切接触或聚餐等方式引起疫情扩散。

     

    Abstract:
    ObjectiveTo analyze the epidemiological characteristics of a family and workplace clustering of COVID-19, identify the source of infection and the transmission chain, and provide evidence for prevention and control of COVID-19 pandemic.
    MethodField epidemiological method was used to conduct the investigation of confirmed cases and close contacts in this cluster. Data were analyzed with descriptive method. Real-time fluorescent quantitative PCR (RT-PCR) was used to detect the novel coronavirus nucleic acid in the collected respiratory tract samples.
    ResultsA total of 18 epidemiological related cases were collected including 16 confirmed cases and 2 cases of asymptomatic infections. The involved places included 1 beauty clinic workplace and 3 families. Seven cases were males and 11 cases were females, with the minimum, maximum and median age of 3, 65 and 32 years old, respectively. Among them, the employees attack rate was 9.80% (10/102), the family attack rate was 7.70% (5/78), and the customer attack rate was 0.58% (1/173). Positive nucleic acid test result in the respiratory tract sample of asymptomatic infection lasted for more than 2 months.
    ConclusionsThe cause of this clustered COVID-19 epidemic is that the workplace environment is relatively closed with clustering crowds, and the source of imported infection is not discovered in time, which lead to a point-source outbreak and spread through family close contacts and clustering.

     

/

返回文章
返回