杭州市<b>42</b>起新型冠状病毒肺炎聚集性疫情的流行特征分析

孙昼; 陈珺芳; 刘牧文; 考庆君; 孔庆鑫

doi:10.19428/j.cnki.sjpm.2022.21044

杭州市42起新型冠状病毒肺炎聚集性疫情的流行特征分析

Analysis of epidemic characteristics of forty-two COVID-19 cluster outbreaks in Hangzhou

摘要

摘要:
目的分析杭州市42起新型冠状病毒肺炎（COVID-19）聚集性疫情流行特征，为下一步防控策略提供依据。
方法从中国疾病预防控制中心突发公共卫生事件报告系统中收集杭州市COVID-19的聚集性资料，梳理分析疫情的流行特征。
结果 42起COVID-19聚集性疫情共报告确诊病例130例，无症状感染者7例。疫情发生时间集中在2020年1—2月，92.86%（39/42）疫情发生在家庭内，疫情规模为2人的情况占54.76%（23/42），续发病例中家庭成员占84.15%（69/82）。
结论杭州市COVID-19聚集性疫情主要发生在家庭内部，续发病例以家庭成员为主。

Abstract:
Objective To determine the epidemic characteristics of forty-two coronavirus disease 2019 （COVID-19） cluster outbreaks in Hangzhou city and provide scientific evidence for further prevention and control measures.
Methods Data of the COVID-19 cluster outbreaks in Hangzhou were obtained from the National Public Health Emergency Management Information System. Epidemic characteristics were summarized by reviewing the epidemiological investigation reports.
Results A total of forty-two COVID-19 cluster outbreaks were documented in Hangzhou in 2020， including 130 confirmed cases and 7 cases with asymptomatic infection. The majority occurred from January to February， 2020. Moreover， 92.86% （39/42） of the cluster outbreaks were familial transmission. The proportion of the cluster outbreaks involving 2 cases accounted for 54.7% （23/42）. In the secondary cases， family members accounted for 84.15% （69/82）.
Conclusion The COVID-19 cluster outbreaks in Hangzhou mainly occur in families， and the majority of the secondary cases is family members.

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