一起新型冠状病毒肺炎聚集性疫情流行病学调查  

Epidemiological investigation on a cluster epidemic of COVID-19

作　　者：蒋玉艳[1] 黄家成 钟延旭[1] 李永红[1] 韦森 黄绍毅[3] 谭毅[1] 石萌萌[1] 苏奕成 林玫[1] JIANG Yu-yan;HUANG Jia-cheng;ZHONG Yan-xu;LI Yong-hong;WEI Sen;HUANG Shao-yi;TAN Yi;SHI Meng-meng;SU Yi-cheng;LIN Mei(Guangxi Center for Disease Control and Prevention,Nanning,Guangxi 530028,China;不详)

机构地区：[1]广西壮族自治区疾病预防控制中心,广西南宁530028 [2]都安瑶族自治县疾病预防控制中心,广西河池530700 [3]河池市疾病预防控制中心,广西河池547000

出　　处：《现代预防医学》2020年第20期3807-3810,共4页Modern Preventive Medicine

基　　金：广西医疗卫生适宜技术开发与推广应用项目(S2018063)。

摘　　要：目的对广西某县一起新型冠状病毒肺炎(COVID-19)聚集性疫情进行流行病学调查,旨在了解COVID-19的流行病学特征,为疫情防控提供更多科学依据。方法采用描述性研究方法对该聚集性病例进行时间、地区、人群等三间分布描述。结果本起聚集性疫情共报告确诊病例19例,无症状感染者2例,临床诊断病例1例(发病未确诊)。暴露场所主要为家庭(16例,占72.73%)、休闲广场(2例,占9.09%)、超市(4例,占18.18%),病例分布在4个乡镇,并波及5个家庭,产生家庭四代病例传播。感染病例年龄分布在10月龄~85岁之间,年龄中位数为39.5岁,病例潜伏期为1~14 d,中位数为7 d,发病-就诊时间间隔为0~11 d,中位数3 d。结论家庭暴露和公共场所暴露是导致此次新型冠状病毒肺炎聚集性疫情的关键,早期采取严格的封控措施,加强密切接触者管控可以有效阻止聚集性疫情的扩散。Objective To investigate the epidemiological characteristics of a cluster epidemic of COVID-19 in some county in Guangxi,and to provide more scientific basis for the prevention and control measures.Methods Descriptive research method was used to describe the time,region and population distribution of the cluster cases of COVID-19.Results It had occurred 19 confirmed COVID-19 cases,2 asymptomatic infection and 1 clinical diagnosis case(not confirmed).The exposed places were mainly families(16 cases,72.73%),squares(2 cases,9.09%)and supermarkets(4 cases,18.18%),and the cases were distributed in 4 townships,and the epidemic had spread 5 families.Four generations of family case transmission had occurred.The age of the cases ranged from 10 months to 85 years,with a median age of 39.5 years.The incubation period was 1-14 days,with a median of 7 days.The onset-medical of all the cases was 0-11 days,and the median was 3 days.Conclusion Family exposure and public exposure are key to the outbreak of COVID-19.In the early stage of the epidemic,strict blocking and control of close contacts measures can effectively prevent the spread of COVID-19.

关 键 词：新型冠状病毒肺炎 聚集性疫情 流行病学 调查 

分 类 号：R181.8[医药卫生—流行病学]