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Phase- and epidemic region-adjusted estimation of the number of coronavirus disease 2019 cases in China |
Ruijie Chang1, Huwen Wang1, Shuxian Zhang1, Zezhou Wang2, Yinqiao Dong3, Lhakpa Tsamlag1, Xiaoyue Yu1, Chen Xu1, Yuelin Yu1, Rusi Long1, Ning-Ning Liu1, Qiao Chu1, Ying Wang1, Gang Xu1, Tian Shen1, Suping Wang1, Xiaobei Deng1, Jinyan Huang4, Xinxin Zhang5(), Hui Wang1(), Yong Cai1() |
1. School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China 2. Department of Cancer Prevention, Shanghai Cancer Center, Fudan University; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200025, China 3. Department of Environmental and Occupational Health, School of Public Health, China Medical University, Shenyang 110122, China 4. State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, National Research Center for Translational Medicine (Shanghai), Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China 5. Research Laboratory of Clinical Virology, National Research Center for Translational Medicine (Shanghai), Ruijin Hospital and Ruijin Hospital North Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China |
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Abstract The outbreak of the coronavirus disease 2019 in China was first reported in Wuhan in December 2019 and gradually spread to other areas in China. After implementation of prevention and control measures, the estimation of the epidemic trend is needed. A phase- and region-adjusted SEIR model was applied for modeling and predicting the number of cases in Wuhan, Hubei Province and regions outside Hubei Province in China. The estimated number of infections could reach its peak in late February 2020 in Wuhan and Hubei Province, which is 55 303–84 520 and 83 944–129 312, respectively, while the epidemic peaks in regions outside Hubei Province in China could appear on February 13, 2020 with the estimated 13 035–19 108 cases. According to the estimation, the outbreak would abate in March and April all over China. Current estimation provided evidence for planned work resumption under stringent prevention and control in China to further support the fight against the epidemic. Nevertheless, there is still possibility of the second outbreak brought by the work resumption and population migration, especially from Hubei Province and high intensity cities outside Hubei Province. Strict prevention and control measures still need to be considered in the regions with high intensity of epidemic and densely-populated cities.
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Keywords
SEIR model
COVID-19
estimate
China
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Corresponding Author(s):
Xinxin Zhang,Hui Wang,Yong Cai
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Just Accepted Date: 18 March 2020
Online First Date: 31 March 2020
Issue Date: 09 May 2020
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