羽毛球场馆一起新型冠状病毒感染聚集性疫情的流行病学调查  

Epidemiological investigation of a cluster of COVID-19 in badminton venues

作　　者：向泽林[1] 富小飞 亓云鹏[1] 朱国英[1] 顾伟玲[1] 胡洁[1] 李傅冬[2] 周晚玲[1] 侯志刚 刘杨 刘砚清 郭飞飞 陆先权 郭林杰 陈中文[1] XIANG Zelin;FU Xiaofei;QI Yunpeng;ZHU Guoying;GU Weiling;HU Jie;LI Fudong;ZHOU Wanling;HOU Zhigang;LIU Yang;LIU Yanqing;GUO Feifei;LU Xianquan;GUO Linjie;CHEN Zhongwen(Department of Communicable Disease Control and Prevention,Jiaxing Center for Disease Control and Prevention,Jiaxing,Zhejiang 314050,China;Zhejiang Provincial Center for Disease Control and Prevention,Hangzhou,Zhejiang 310057,China;Pinghu Center for Disease Control and Prevention,Pinghu,Zhejiang 314200,China)

机构地区：[1]嘉兴市疾病预防控制中心传染病预防控制科,浙江嘉兴314050 [2]浙江省疾病预防控制中心,浙江杭州310057 [3]平湖市疾病预防控制中心,浙江平湖314200

出　　处：《预防医学》2023年第4期316-319,共4页CHINA PREVENTIVE MEDICINE JOURNAL

基　　金：嘉兴市科技项目(2020AZ00002);嘉兴市病原微生物检测重点实验室。

摘　　要：目的对2022年3月13日浙江省嘉兴市平湖市报告的首例新型冠状病毒感染(新冠感染)疫情开展流行病学调查,为新冠感染疫情防控提供依据。方法按照《新型冠状病毒肺炎防控方案(第八版)》要求,对2022年3月13—20日平湖市报告的39例新冠感染者开展流行病学调查,收集基本信息、发现途径、诊疗经过、临床表现、免疫史和暴露史等资料,排查密切接触者;采集感染者咽拭子标本检测新型冠状病毒核酸和全基因组序列;调查感染来源和传播途径。结果该起疫情的指示病例为上海市输入病例,3月9日在平湖市全民健身中心羽毛球馆打球时通过气溶胶传播感染6人,其中1人于3月12日在乍浦镇嘉电新村百姓健身房羽毛球馆打球时感染18人。共报告确诊病例16例,均为轻症,无症状感染者23例,无死亡病例。发病日期为3月11—20日,传播3代,潜伏期中位数为3 d。感染者年龄M(QR)为33.5(12.0)岁;有新冠疫苗接种史36例;出现发热、咳嗽、流涕、咽痛等症状16例;有肺炎影像学特征13例。疫情早期有效传播指数(Rt)为7.73,3月21日起Rt值<1。基因测序显示33例为Omicron BA.2,与指示病例高度同源。结论该起疫情为外省输入引起的Omicron BA.2聚集性疫情,溯源清晰,主要通过室内气溶胶传播。Objective To perform an epidemiological survey of the first case with severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)infection in Pinghu City of Jiaxing City,Zhejiang Province on March 13,2022,so as to provide insights into the management of coronavirus disease(COVID-19)epidemics.Methods According to the require⁃ments of the Protocol on Prevention and Control of COVID-19(8th Edition),epidemiological investigations were per⁃formed among 39 cases with SARS-CoV-2 infections in Pinghu City from March 13 to 20,2022.Cases'demographics,clinical symptoms,history of immunization and exposure were collected,and close contacts were identified.Pharyngeal swabs were sampled from infected cases for detection of SARS-CoV-2 nucleic acid and whole-genome sequencing,and the source of infection and transmission route were investigated.Results The index case for this COVID-19 epidemic was an imported case from Shanghai Municipality,who infected 6 persons via aerosol transmission when playing in the badminton venue of Pinghu National Fitness Center on March 9;subsequently,one of these infected cases infected an⁃other 18 persons when playing in the badminton venue of Jiadian Village Resident's Fitness Center in Zhapu Township on March 12.Sixteen confirmed cases were reported,and all cases were mild;another 23 asymptomatic cases were diag⁃nosed,with no death reported.This epidemic occurred from March 11 to 20,with 3 generations of spread and a medi⁃an incubation period of 3 days.The SARS-CoV-2 infected cases had a median age of 33.5(interquartile range,12.0)years and included 36 cases with a history of COVID-19 vaccination.There were 16 cases with fever,cough,runny nose and sore throat,and 13 cases with imaging features of pneumonia.The effective reproductive number(Rt)of the COVID-19 epidemic was 7.73 at early stage,and was less than 1 since March 21.Whole-genome sequencing identi⁃fied Omicron BA.2 variant among 33 cases,which had high homology with the index cases.Conclusion This epidemic was a cluster of COVI

关 键 词：新型冠状病毒感染 聚集性疫情 Omicron 气溶胶传播 

分 类 号：R563.1[医药卫生—呼吸系统]