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预防医学  2020, Vol. 32 Issue (3): 222-225    DOI: 10.19485/j.cnki.issn2096-5087.2020.03.002
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平阳县一起新型冠状病毒肺炎聚集性疫情调查
王克顺, 叶志豪, 张定
平阳县疾病预防控制中心传染病防制科,浙江 平阳 325401
Investigation on a cluster of coronavirus disease 2019 in Pingyang County
WANG Keshun, YE Zhihao, ZHANG Ding
Department of Infectious Disease Prevention and Control,Center for Disease Control and Prevention Pingyang,Zhejiang 325401,China
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摘要 目的 对温州市平阳县一起新型冠状病毒肺炎(COVID-19)聚集性疫情开展流行病学调查,提出针对性预防控制建议。方法 按《新型冠状病毒感染的肺炎防控方案(第三版)》要求,开展现场流行病学调查,收集病例基本信息、发病诊疗经过、临床表现、标本采集和检测情况、暴露史及密切接触者等资料,分析病例与其密切接触者的接触方式和频率,判断疫情传播代际和传播链。结果 本起疫情波及138人,共报告6例COVID-19确诊病例和3例无症状感染者,罹患率为6.52%。病例年龄中位数为48岁,临床表现以肺炎影像学特征、发热和咳嗽为主;潜伏期最长9 d,最短4 d,中位数为6 d。首例病例王某,1月18日与丈夫和儿子从武汉市返乡,同住在母亲家中。1月19日王某出现咳嗽症状,至1月23日祖母葬礼期间曾多次前往祖母家帮忙,与6例病例均有接触史,其余2例病例为王某母亲和丈夫,与王某长期居住。除王某外的病例在丧葬活动前均未出现COVID-19相关症状,葬礼前后无其他COVID-19病例接触史,也无其他共同暴露史,故判定王某为本次疫情的传染来源。和病例王某同处一室、同桌进餐与感染COVID-19存在统计学关联(P<0.05)。结论 此次疫情是由COVID-19输入病例导致的本地聚集性疫情,输入来源地为武汉市,主要以同处一室和同桌进餐等近距离接触传播。
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王克顺
叶志豪
张定
关键词 新型冠状病毒肺炎聚集性传播途径输入性    
AbstractObjective To investigate a cluster of coronavirus disease 2019 (COVID-19) in Pingyang County,and to put forward targeted prevention and control suggestions. Methods According to the Prevention and Control Plan of COVID-19 (Third Edition),we carried out epidemiological investigation to collect the information of demographic features,diagnosis and treatment,clinical manifestations,laboratory examination,exposure history and close contact. We analyzed the mode and frequency of exposure,so as to figure out the route of transmission. Results This epidemic resulted in 6 confirmed cases of COVID-19 and 3 asymptomatic cases,with an attack rate of 6.52% (9/138). The median age of the cases was 48 years old. The confirmed cases mainly had imaging features of pneumonia, fever and cough. Their incubation period ranged from 4 to 9 days,and the median was 6 days. The first case,Wang,returned for the funeral of her grandmother from Wuhan with his husband and son on January 18 and lived with her mother. She had cough on January 19,and went to see her grandmother during January 19 to 23. She had contact with 6 cases,and the other 2 cases were Wang's mother and husband,who lived with Wang. All the cases except Wang had no COVID-19 related symptoms before the funeral,no contact history of COVID-19 cases or no other common exposure history except during the funeral. Therefore,Wang was determined as the source of the epidemic,staying in the same room and eating at the same table with her were risk factors for the infection of COVID-19 in this epidemic (P<0.05). Conclusions This was a local clustering epidemic caused by COVID-19 imported cases from Wuhan. It spread mainly by close contacts like staying in the same room and eating at the same table.
Key wordscoronavirus disease 2019    cluster    transmission route    imported case
收稿日期: 2020-02-18      出版日期: 2020-03-19
ZTFLH:  R181.3  
  R563.1  
通信作者: 王克顺,E-mail:wsandsc@126.com   
作者简介: 王克顺,中专,主管医师,主要从事传染病防制工作
引用本文:   
王克顺, 叶志豪, 张定. 平阳县一起新型冠状病毒肺炎聚集性疫情调查[J]. 预防医学, 2020, 32(3): 222-225.
WANG Keshun, YE Zhihao, ZHANG Ding. Investigation on a cluster of coronavirus disease 2019 in Pingyang County. Preventive Medicine, 2020, 32(3): 222-225.
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http://www.zjyfyxzz.com/CN/10.19485/j.cnki.issn2096-5087.2020.03.002      或      http://www.zjyfyxzz.com/CN/Y2020/V32/I3/222
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