Journal of Shandong University (Health Sciences) ›› 2020, Vol. 58 ›› Issue (4): 54-57.doi: 10.6040/j.issn.1671-7554.0.2020.260

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Analysis of a family cluster outbreak of coronavirus disease 2019 in Jinan City

WANG Weiru1, LI Xinrui1, WANG Fang2, ZHAO Xiaodong1, YU Qiuyan1, YANG Guoliang1, LI Zhan1, CHANG Caiyun1, ZHAO Mengjiao1, LIU Xiaoxue1, LI Chuanbin1, SUN Zhan1, GENG Xingyi1   

  1. 1. Jinan Center for Disease Control and Prevention, Jinan 250021, Shandong, China;
    2. Prevention and Control Center of Jinan City Tianqiao Distnct, Jinan 250031, Shandong, China
  • Published:2022-09-27

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Abstract: Objective To analyze the transmission chain of a family cluster outbreak of coronavirus disease 2019(COVID-19)in Jinan City in order to provide scientific basis for the prevention and control strategies. Methods According to the “COVID-19 Diagnosis and Treatment Plan”, the first case was investigated to track the close contacts and analyze the transmission chain. Close contacts received 2019-nCoV nucleic acid test. Results A total of 5 cases were tracked, including 3 common cases, 1 mild case and 1 asymptomatic case. The first case had onset on Jan. 25, 2020, and the other cases had onset 4 to 7 days later. All family members lived and dined together, which imposed high risk of transmission. Cases B, C, D and E were second generation cases, and the transmission chain was clear. It was obviously a family cluster. Conclusion Early detection of the infection source and screening of close contact are significant for the prevention and control of COVID-19. Strategies of early detection, early report, early quarantine and early diagnosis should be strictly implemented.

Key words: Novel coronavirus pneumonia, Clustering, Transmission chain, Prevention and control

CLC Number: 

  • R511
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