Risk assessment of and response to COVID-19 epidemic prevention and control in Zhongshan city based on migration index during the period of returning to work
TAN Ye1, HE Zhi-hui2, HUANG Li-li1, CHEN Xia-wei1, LI Quan-hua2, WANG Zhong-meng2, ZHOU Yu-chao1, CAI Chun-sheng1, HUANG Ying-si1
1. Zhongshan Municipal Center for Disease Control and Prevention, Zhongshan, Guangdong 528403, China; 2. Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, Guangdong 511430, China
Abstract：Objective To analyze the situation of epidemic progress of coronavirus disease 2019 (COVID-19) in Zhongshan city, and to evaluate the imported case risk of COVID-19 in Zhongshan city. Methods We collected data about the reported COVID-19 cases in China (excluding clinically diagnosed cases and the data about Hong Kong, Macao and Taiwan) and Baidu Migration Index as of February 29, 2020, performed a correlation analysis between the cumulative numbers of reported cases in cities outside Guangdong province in 7 days before February 29 and the Migration Index of Zhongshan city, and evaluated the imported risk of COVID-19 in Zhongshan city during the period of returning to work. Results Sixty-six confirmed cases were reported cumulatively in Zhongshan city. The proportion of imported cases was 87.88%, and cases from Hubei province accounted for 74.24% (49/66). Guangxi province, Sichuan province, Hunan province and Jiangxi province ranked the top four in terms of cumulative imported risk, with the cumulative risk indexes of 1.0820, 0.5494, 0.2041 and 0.0656, respectively. Among the top eleven main cities with population migration to Zhongshan city within the 7 days, Yongzhou city and Chongqing city ranked the top two in terms of cumulative imported risk. Conclusions COVID-19 epidemic in Zhongshan city was mainly caused by the importation of Hubei province. The epidemic prevention and control work has achieved phased results at the moment. To prevent the imported risk of cases from surrounding areas and high epidemic areas will still the focus of the epidemic prevention and control work in Zhongshan city.
谈晔, 何志辉, 黄莉莉, 陈夏威, 李权华, 王钟盟, 周郁潮, 蔡春生, 黄莹偲. 基于迁徙指数的复工时期中山市新冠肺炎疫情防控风险评估与应对[J]. 实用预防医学, 2020, 27(11): 1308-1310.
TAN Ye, HE Zhi-hui, HUANG Li-li, CHEN Xia-wei, LI Quan-hua, WANG Zhong-meng, ZHOU Yu-chao, CAI Chun-sheng, HUANG Ying-si. Risk assessment of and response to COVID-19 epidemic prevention and control in Zhongshan city based on migration index during the period of returning to work. , 2020, 27(11): 1308-1310.
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2020, Vol. 27 
