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预防医学  2020, Vol. 32 Issue (7): 674-677    DOI: 10.19485/j.cnki.issn2096-5087.2020.07.006
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南宁市新型冠状病毒肺炎聚集性疫情流行特征分析
刘昊晖, 覃健敏, 农皓, 蒋作祎
南宁市疾病预防控制中心应急办,广西 南宁 530023
Epidemiological characteristics of COVID-19 clusters in Nanning
LIU Haohui, QIN Jianmin, NONG Hao, JIANG Zuoyi
Emergency Office of Nanning Center for Disease Control and Prevention,Nanning,Guangxi 530023,China
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摘要 目的 分析广西壮族自治区南宁市新型冠状病毒肺炎(COVID-19)聚集性疫情流行特征,为防控COVID-19疫情提供依据。方法 通过中国疾病预防控制信息系统突发公共卫生事件报告管理信息系统收集2020年1—2月南宁市COVID-19聚集性疫情资料,采用描述流行病学方法分析疫情时间分布、地区分布、人群分布、感染来源、代际传播情况、疫情发现方式和规模等。结果 2020年1—2月南宁市共报告COVID-19聚集性疫情11起,报告确诊病例36例,涉及暴露人数293人,平均罹患率为12.29%,其中家庭聚集性疫情10起。疫情规模均较小,平均每起疫情报告病例3.27例。聚集性疫情病例发病时间在1月23日达高峰,报告时间主要集中在2月10日—18日;病例分布在2个城区和1个县,其中青秀区和西乡塘区罹患率为16.95%,高于马山县的5.17%(p<0.05)。家庭密切接触者续发率为25.42%,高于其他密切接触方式(p<0.05)。11起聚集性疫情中,输入疫情和输入关联性疫情9起;发生二代及以上病例5起,首代病例与二代病例发病间隔时间中位数为3 d。结论 南宁市COVID-19聚集性疫情多由输入病例引起,以家庭聚集性疫情为主,疫情规模较小,报告集中在2月中旬,城区居民罹患率高于农村居民。
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刘昊晖
覃健敏
农皓
蒋作祎
关键词 新型冠状病毒肺炎聚集性疫情流行特征    
AbstractObjective To learn the epidemiological characteristics of coronavirus disease 2019(COVID-19)clusters in Nanning,Guangxi Province,so as to provide reference for the prevention and control of COVID-19. Methods The data of COVID-19 clusters from January to February,2020 in Nanning were collected through the Public Emergency Response System of National CDC. Descriptive epidemiological analysis were conducted to analyze the time,space and population distribution, source of infection,transmission chain, ways of detection and the scale of clusters. Results Eleven clusters were reported,with 36 confirmed cases and 293 exposed persons. The average attack rate was 12.29%. There were ten family clusters. The epidemic scale was small,with an average of 3.27 cases. The onset of cases peaked on January 23,while the reporting time was mainly from February 10 to February 18. The cases were distributed in two cities and one county. The attack rate of Qingxiu District and Xixiangtang District was 16.95%,which was higher than 5.17% of Mashan County(p<0.05). The recurrence rate of family contacts was 25.42%,which was higher than that of other ways of contacts(p<0.05). Of eleven clusters,nine were caused by imported cases or related cases;five developed secondary cases or above,and the median interval between the first and secondary cases was three days. Conclusions The COVID-19 clusters in Nanning occurred mainly in families with small scales and most were caused by imported cases. The majority of the cases were reported during mid February. The attack rate in urban areas was higher than that in rural areas.
Key wordscoronavirus disease 2019    cluster    epidemiological characteristics
收稿日期: 2020-04-08      出版日期: 2020-07-21
ZTFLH:  R181.3  
基金资助:广西壮族自治区卫生健康委员会自筹经费科研基金(Z20191014,Z20191016)
通信作者: 覃健敏,E-mail:qjmin2005@163.com   
作者简介: 刘昊晖,本科,主管医师,主要从事卫生应急管理工作
引用本文:   
刘昊晖, 覃健敏, 农皓, 蒋作祎. 南宁市新型冠状病毒肺炎聚集性疫情流行特征分析[J]. 预防医学, 2020, 32(7): 674-677.
LIU Haohui, QIN Jianmin, NONG Hao, JIANG Zuoyi. Epidemiological characteristics of COVID-19 clusters in Nanning. Preventive Medicine, 2020, 32(7): 674-677.
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http://www.zjyfyxzz.com/CN/10.19485/j.cnki.issn2096-5087.2020.07.006      或      http://www.zjyfyxzz.com/CN/Y2020/V32/I7/674
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