Journal of Shandong University (Health Sciences) ›› 2020, Vol. 58 ›› Issue (4): 32-40.doi: 10.6040/j.issn.1671-7554.0.2020.243

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Consideration about cluster epidemic of 37 COVID-19 cases

LI Xinrui1, GENG Xingyi1, WANG Weiru1, ZHAO Xiaodong1, LIU Lanzheng1, ZHANG Xiaofei2, LÜ Cuixia2, CHANG Caiyun1, LI Zhan1, CUI Liangliang1, RUAN Shiman1   

  1. 1. Jinan Center for Disease Control and Prevention, Jinan 250021, Shandong, China;
    2. Shandong Center for Disease Control and Prevention, Jinan 250014, Shandong, China
  • Published:2022-09-27

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Abstract: Objective To summarize the cluster epidemic characteristics of coronavirus disease 2019(COVID-19)in Jinan City in order to provide reference for further preventive measures. Methods A cross-sectional study was conducted on the demography, exposure history of risk factors, transmission capacity, medical services and clinical symptoms of 37 COVID-19 cases confirmed during Jan. 24 and Feb. 11, 2020. Results There were 9 cluster outbreaks in Jinan City. Among the initial cases, 8 had exposure history of Wuhan City. The median incubation period was 9 days and the median number of infection was 3. The main contact mode was living together. Most cases were common type. So far 25 patients were cured and discharged. Conclusion The SARS-CoV-2 is highly infectious. The clusters of COVID-19 in Jinan City are mainly caused by close contact. Comprehensive measures are recommended to control the spread of the epidemic.

Key words: Coronavirus disease 2019, Cluster, Risk, Prevention and control, Epidemic

CLC Number: 

  • R511
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