丽水市新型冠状病毒肺炎聚集性疫情分析  

Characteristics of COVID-19 clusters in Lishui

作　　者：洪浚扉 李羽敏[1] 季巧英[1] 陈荣富[1] 吴振宇[1] 陶桃[1] 董升草[1] 刘商卫 叶先明[3] HONG Junfei;LI Yumin;JI Qiaoying;CHEN Rongfu;WU Zhenyu;TAO Tao;DONG Shengcao;LIU Shangwei;YE Xianming(Lishui Center for Disease Control and Prevention,Lishui,Zhejiang 323000,China;不详)

机构地区：[1]丽水市疾病预防控制中心,浙江丽水323000 [2]景宁县疾病预防控制中心 [3]庆元县疾病预防控制中心

出　　处：《预防医学》2020年第12期1217-1219,共3页CHINA PREVENTIVE MEDICINE JOURNAL

基　　金：丽水市新型冠状病毒肺炎防控关键技术研究(2020KJGG06)。

摘　　要：目的分析丽水市新型冠状病毒肺炎(COVID-19)聚集性疫情流行特征,为COVID-19聚集性疫情防控提供依据。方法通过中国疾病预防控制中心信息系统突发公共卫生事件管理信息系统收集2020年1月23日—3月29日丽水市COVID-19聚集性疫情资料,采用描述性流行病学方法分析聚集性疫情的时间分布、地区分布、规模、感染来源、暴露模式和传播方式等。结果 1月23日—3月29日丽水市共报告8起COVID-19聚集性疫情,累计发病31例,平均每起疫情涉及病例约4例。无死亡病例。报告时间呈双峰分布,1月20日—2月10日为第一波高峰,报告4起,均为国内输入;3月1—29日为第二波高峰,报告4起,均为境外输入。青田县报告4起,莲都区、云和县、庆元县和景宁畲族自治县各报告1起。病例以餐饮食品从业人员为主,13例占41.94%。家庭同住暴露6起,同餐且同车暴露1起,聚会暴露1起;引起较多人感染的暴露模式为家庭同住暴露(感染9例)和同餐且同车暴露(感染6例)。仅发生一代病例3起,发生二代病例3起,发生三代病例2起;8起聚集性疫情的续发率为1.49%~7.69%,中位数为3.47%。结论丽水市COVID-19聚集性疫情前期以国内输入为主,后期以境外输入为主,多为青田县报告,职业以餐饮食品业人员为主,暴露模式以家庭同住暴露为主。Objective To analyze the epidemiological characteristics of coronavirus disease 2019( COVID-19) clusters in Lishui, so as to provide basis for the prevention and control of COVID-19 clusters. Methods The data of COVID-19 clusters in Lishui from January 23 to March 29, 2020 were collected through China Disease Control and Prevention Information System-Public Health Emergency Information System, and analyzed time, space, scale, source of infection,exposure and transmission route by descriptive epidemiological method. Results There were 31 cases in 8 clusters( about 4 cases per cluster), with no death. The report time was bimodal, peaked first from January 20 to February 10 with 4 clusters imported from domestic and peaked second from March 1 to 29 with 4 clusters imported from overseas.Qingtian County reported 4 clusters, Liandu District, Yunhe County, Qingyuan County and Jingning County each reported1 cluster. Thirteen cases were restaurant employees, accounting for 41.94%. The cases were mainly occurred in the condition that exposed in the same family( 6 clusters), in the same dinner and car( 1 clusters), and in the same party( 1 clusters). The exposure modes that caused more cases infected were through the same family(9 cases) and through the same dinner and car( 6 cases). There were 3 clusters with first-generation cases, 3 clusters with second-generation cases and 2 clusters with third-generation cases. The recurrence rate of the 8 clusters ranged from 1.49% to 7.69%, with a median of 3.47%. Conclusions The COVID-19 clusters in Lishui imported from domestic in the early stage and later from overseas. Most cases were reported from Qingtian County, were engaged in catering business, and exposed by living with families.

关 键 词：新型冠状病毒肺炎 聚集性疫情 输入病例 密切接触者 

分 类 号：R181.3[医药卫生—流行病学] R563.1[医药卫生—公共卫生与预防医学]