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. 2022 Dec 16;4(50):1131-1135.
doi: 10.46234/ccdcw2022.228.

Characteristics and Containment of 74 Imported COVID-19 Outbreaks: Experiences, Lessons, and Implications - China, 2020-2021

Fuxiao Li  1 , Chang Wei  1 , Bingli Li  1 , Tengfei Lin  1 , Yiwen Jiang  1 , Di Liu  1 , Zhirong Yang  1 , Zuyao Yang  2 , Feng Sha  1 , Jinling Tang  1   3
Affiliations

Characteristics and Containment of 74 Imported COVID-19 Outbreaks: Experiences, Lessons, and Implications - China, 2020-2021

Fuxiao Li et al. China CDC Wkly. .

Abstract

What is already known about this topic?: After the initial coronavirus disease 2019 (COVID-19) outbreak in Wuhan, China, the outbreaks during the dynamic-zero policy period in the mainland of China have not been systematically documented.

What is added by this report?: We summarized the characteristics of 74 imported COVID-19 outbreaks between March 19, 2020 and December 31, 2021. All outbreaks of early severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants were successfully contained with the aid of nucleic acid testing, modern communication technologies, and non-pharmacological interventions.

What are the implications for public health practice?: These findings provide us with confidence for the containment of future emerging infectious diseases alike at early stages to prevent pandemics or to win time to gain experience, develop vaccines and drugs, vaccinate people, and wait for the possible lessening of the virus' pathogenicity.

Keywords: COVID-19; Containment strategy; Outbreak elimination.

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Conflict of interest statement

No conflicts of interest.

Figures

Figure 1
Figure 1
Occurrence and size of outbreaks by region and time in the mainland of China between March 19, 2020 and December 31, 2021.
Figure S1
Figure S1
The rules for judging whether a symptomatic case belonged to a certain outbreak.
Figure S2
Figure S2
Daily number of inbound cases, domestic symptomatic cases, domestic symptomatic and asymptomatic cases, and both inbound and domestic close contacts over time in the mainland of China between March 19, 2020 and December 31, 2021.
Figure S3
Figure S3
The detection mode in each outbreak stratified by the source of the first case.
See this image and copyright information in PMC

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References

    1. Zheng CJ, Chang ZR, Liu FF, Geng MJ, Chen H, Jiang JW, et al Interpretation of the Protocol for Prevention and Control of COVID-19 in China (Edition 7) China CDC Weekly. 2020;2(47):902–5. doi: 10.46234/ccdcw2020.245. - DOI - PMC - PubMed
    1. Liu FF, Zheng CJ, Wang LP, Geng MJ, Chen H, Zhou S, et al Zhaorui Chang. Interpretation of the Protocol for Prevention and Control of COVID-19 in China (Edition 8) China CDC Weekly. 2021;3(25):527–30. doi: 10.46234/ccdcw2021.138. - DOI - PMC - PubMed
    1. Tang JL, Li LM Importance of public health tools in emerging infectious diseases. BMJ. 2021;375:n2374. doi: 10.1136/BMJ.N2374. - DOI - PMC - PubMed
    1. Zhou YB, Jiang HL, Wang QY, Yang MX, Chen Y, Jiang QW Use of contact tracing, isolation, and mass testing to control transmission of COVID-19 in China. BMJ. 2021;375:n2330. doi: 10.1136/BMJ.N2330. - DOI - PMC - PubMed
    1. Tu HW, Hu KQ, Zhang M, Zhuang YL, Song T Effectiveness of 14 day quarantine strategy: Chinese experience of prevention and control. BMJ. 2021;375:e066121. doi: 10.1136/BMJ-2021-066121. - DOI - PMC - PubMed

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