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| Epidemiological characteristics of coronavirus disease 2019 in Wenzhou |
| LI Ling, XIA Ziqi, YU Xianghua, NI Chaorong, PAN Qiongjiao, XU Feng, LI Wancang, ZHANG Xiaoming, ZENG Shidian
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| Wenzhou Center for Disease Control and Prevention,Wenzhou,Zhejiang 325001,China |
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Abstract Objeetive The epidemiological characteristics of confirmed cases of the 2019 novel coronavirus diseases (COVID-19) which was reported in Wenzhou by February 28,2020 were described and analyzed to provide evidence for prevention and control measures in next stage. Methods The field investigation method was employed on all suspected and confirmed cases. The data of time,spatial and population distribution, source of infection and detective routes of all confirmed cases of COVID-19 in Wenzhou were collected and extracted from the reports of field investigation and the National Diseases Prevention and Control Information System. Results As of February 20,2020,504 confirmed cases of COVID-19 were diagnosed in Wenzhou, which included one death case. Among all 13 counties, the highest number of confirmed cases were distributed in Yueqing,Ruian and Lucheng. Among 504 cases, the male to female ratio was reported as 1.14:1. The youngest case was 2 years old while the oldest case was 93 years old. Most of the confirmed cases were among people between the ages of 25 and 64 years old. The most common occupation of the confirmed cases was businessman,which accounts for 29.76% (150 cases). Clinical symptoms of the first confirmed case of COVID-19 in Wenzhou occurred on January 4, 2020. Approximately 70% of cases had the first symptoms from January 19 to February 1. The daily number of new cases on January 24 and January 26 were the highest while the number of new cases per day declined significantly after February 2, and there were no new cases after February 14. Among all confirmed cases, the infection source of 61.71% cases were related to Wuhan. As of February 20, 2020, a total of 79 clusters were reported in Wenzhou, which involved 330 cases. Approximately 30% of confirmed cases came to hospitals unaccompanied by community staffs, and cases which confirmed after February 13 were basically found in central isolation locations or by grid checkers. Conclusions The main reason for the high case numbers of COVID-19 in Wenzhou, in Zhejiang province, was the high number of wenzhou citizens who work in Wuhan. Imported cases account for the most confirmed cases during the early period, while mainly confirmed cases were local cases during the middle and late periods. The outcomes suggest the prevention and control measures employed by Wenzhou government, which included closed-loop control and quantitative control, have achieved remarkable results and the epidemic of COVID-19 in Wenzhou has been initially controlled.
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Received: 07 March 2020
Revised: 10 April 2020
Published: 22 June 2020
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[1] ZHU N,ZHANG D,WANG W,et al.A novel coronavirus from patients with pneumonia in China,2019[J].N Engl J Med,2020,382(8):727-733.
[2] LI X,ZAI J,WANG X,et al.Potential of large “first generation”human-to-human transmission of 2019-nCoV[J].J Med Virol.2020,92(4)L448-454.
[3] 凌锋,刘社兰,倪朝荣,等.浙江省首例新型冠状病毒肺炎报告病例流行病学调查[J].预防医学,2020,32(2):109-112.
[4] 林君芬,吴梦娜,吴昊澄,等.浙江省新型冠状病毒肺炎病例流行特征分析[J].预防医学,2020,32(3):217-221,225.
[5] 中华人民共和国国家卫生健康委员会.关于印发新型冠状病毒肺炎诊疗方案(试行第六版)的通知[EB/OL].(2020-02-19)[2020-04-10]. http://www.nhc.gov.cn/xcs/zhengcwj/202002/8334a8326dd94d329df351d7da8aefc2.shtml.
[6] 中华人民共和国国家卫生健康委员会.关于印发新型冠状病毒肺炎防控方案(第五版)的通知[EB/OL].(2020-02-19)[2020-04-10].http://www.nhc.gov.n/xcs/zhengcwj/202002/a5d6f7b8cc48c451c87dba14889b30147.shtml.
[7] 中国疾病预防控制中心新型冠状病毒肺炎应急响应机制流行病学组.新型冠状病毒肺炎流行病学特征分析[J].中华流行病学杂志,2020,41(2):145-151.
[8] 唐安,仝振东,李科峰,等.舟山市新型冠状病毒肺炎病例流行病学特征分析[J].预防医学,2020,32(2):113-116.
[9] 欧剑鸣,叶雯婧,郑奎城,等.福建省新型冠状病毒肺炎流行病学特征分析[J/OL].中国人兽共患病学报(2020-03-02)[2020-04-10]. http://kns.cnki.net/kcms/detail/35.1284.R.20200302.1320.004.html.
[10] 中华预防医学会新型冠状病毒肺炎防控专家组.新型冠状病毒肺炎流行病学特征的最新认识[J].中华流行病学杂志,2020,41(2):139-144.
[11] 李承倬,武文韬,潘振宇,等.基于SIR模型和基本再生数的浙江省新型冠状病毒肺炎防控效果分析[J].浙江医学,2020,42(4):311-314.
[12] 世界卫生组织.世卫组织总干事2020年3月11日在2019冠状病毒病(COVID-19)疫情媒体通报会上的讲话[EB/OL].2020. |
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