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

作　　者：孔超[1] 何佳谕 王文胜 贺嫦悠 李艳[1] 梁鸿镖[3] 胡雅飞[3] 林海江[3] 林春萍[1] KONG Chao;HE Jia-yu;WANG Wen-sheng;HE Chang-you;LI Yan;LIANG Hong-biao;HU Ya-fei;LIN Haijiang;LIN Chun-ping(Huangyan District Center for Disease Control and Prevention,Taizhou,Zhejiang 318020,China;School of Public Health,Fudan University,Shanghai 200032,China;Taizhou Center for Disease Control and Prevention,Taizhou,Zhejiang 318000,China)

机构地区：[1]台州市黄岩区疾病预防控制中心,浙江台州318020 [2]复旦大学公共卫生学院,上海200032 [3]台州市疾病预防控制中心,浙江台州318000

出　　处：《上海预防医学》2021年第6期471-476,共6页Shanghai Journal of Preventive Medicine

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。[Objective]To 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.[Method]Field 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.[Results]A 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.[Conclusions]The 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.

关 键 词：新型冠状病毒肺炎 聚集性 流行病学调查 工作场所 

分 类 号：R183.3[医药卫生—流行病学]