文章摘要
马启玲,李萍,陈晓莉,武振军,刘彩萍,王晓霞,吴文军,李宏宇.1 665名新型冠状病毒肺炎密切接触者医学观察情况分析[J].中华流行病学杂志,,():
1 665名新型冠状病毒肺炎密切接触者医学观察情况分析
Analysis on medical observation of 1 665 close contacts of COVID-19 cases
收稿日期:2020-02-27  出版日期:2020-05-09
DOI:10.3760/cma.j.cn112338-20200227-00197
中文关键词: 新型冠状病毒肺炎;密切接触者;医学观察
英文关键词: COVID-19;Close contact;Medical observation
基金项目:
作者单位E-mail
马启玲 宁夏回族自治区银川市疾病预防控制中心 750001 nyyfmql@163.com 
李萍 宁夏回族自治区银川市疾病预防控制中心 750001  
陈晓莉 宁夏回族自治区银川市疾病预防控制中心 750001  
武振军 宁夏回族自治区银川市疾病预防控制中心 750001  
刘彩萍 宁夏回族自治区银川市疾病预防控制中心 750001  
王晓霞 宁夏回族自治区银川市疾病预防控制中心 750001  
吴文军 宁夏回族自治区银川市疾病预防控制中心 750001  
李宏宇 宁夏回族自治区银川市疾病预防控制中心 750001  
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中文摘要:
      目的 了解某市新型冠状病毒肺炎(COVID-19)病例密切接触者的确定及医学观察情况,为疫情防控策略调整提供科学依据。方法 采用描述性流行病学方法,对所有密切接触者一般情况进行分类分析。对密切接触者采集咽拭子进行实时荧光定量RT-PCR法检测,按照新型冠状病毒感染的肺炎诊疗方案(试行第五版)确定确诊病例。结果 1 665名密切接触者中在医学观察期发病的有10例,占全市所有确诊病例的30.30%,10例密切接触者确诊病例多为确诊病例近亲属,与确诊病例最晚接触时间最长为8 d,最短为0 d。10例密切接触者病例构成了6起家族聚集性疫情。结论 在COVID-19防控工作中,某市积极追踪确诊病例传播证据链,及时确定密切接触者,将确诊病例发病前14 d接触人群纳入密切接触者管理,在控制疫情中起到了非常关键的作用,全市近1/3的病例在医学观察期发病,做到了传染源有效管控和切断传播途径,及时阻止了聚集性疫情的扩散传播。
英文摘要:
      Objective To understand the identification and medical observation of close contacts of COVID-19 cases in a city and provide scientific basis for the adjustment of the epidemic prevention and control strategies. Methods Descriptive epidemiological methods were used to analyze the general characteristics of all the close contacts of COVID-19 cases in a city. Throat swabs were collected from the close contacts for real-time fluorescent RT-PCR. The confirmed cases were diagnosed according to diagnosis and treatment of COVID-19 (trial version 5). Results Among the 1 665 close contacts of COVID-19 cases in a city, 10 were diagnosed as COVID-19 cases during the medical observation period, accounting for 30.30% of all the confirmed cases in a city, most of them were close relatives of the confirmed cases. The longest contact time with the confirmed cases was 8 days and the shortest was 0 days. Ten COVID-19 cases in close contacts constituted to six family clusters. Conclusions In COVID-19 prevention and control in a city, the active tracking of the transmission chains of the confirmed cases and timely identification of the close contacts were conducted. The people who had close contacts with the confirmed COVID-19 cases within 14 days before onset were all placed under medical observation, which played a key role in the effective prevention and control of COVID-19 epidemic in a city. Nearly one third of COVID-19 cases occurred during the medical observation period, so the infection sources were effectively controlled and transmission routes were effectively blocked, which greatly facilitated the prevention of the clusters of COVID-10 cases.
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