Journal of Shandong University (Health Sciences) ›› 2020, Vol. 58 ›› Issue (10): 74-81.doi: 10.6040/j.issn.1671-7554.0.2020.0745

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Epidemiological characteristics and spatial-temporal clustering of COVID-19 in Hebei Province

LIU Tingxuan1, QI Chang1, SHE Kaili1, JIA Yan1, ZHU Yuchen1, LI Chunyu1, LIU Lili1, WANG Xu1, ZHANG Zhihua2, LI Xiujun1   

  1. 1. Department of Biostatistics, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, China;
    2. Department of Science and Education, Hebei Chest Hospital, Shijiazhuang 050041, Hebei, China
  • Published:2020-10-08

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Abstract: Objective To analyze the epidemiological characteristics and spatial-temporal clustering of coronavirus disease 2019(COVID-19)in Hebei Province in order to provide scientific basis for the formulation of prevention and control measures. Methods Data of COVID-19 epidemic in Hebei Province from Jan. 22 to Feb. 27, 2020 were collected to analyze the epidemic characteristics. The clustering of epidemic was analyzed with spatial-temporal scanning. Results On Jan. 22, the first confirmed case of COVID-19 was reported in Shijiazhuang City. As of Feb. 27, a total of 318 cases were reported in the whole province, including 80 imported cases(25.16%)from Hubei(including Wuhan), and 69 imported cases(21.70%)from Wuhan. The ratio of males to females was 1.06∶1. Patients aged 30 to 69 years accounted for 70.76% of the total. The peak period of epidemic outbreak was Feb. 5 to Feb. 10, with a maximum of 24 cases reported in a single day on Feb. 7, and then the number of cases gradually decreased. As of Mar. 12, there had been no new confirmed cases for 14 consecutive days. COVID-19 epidemic was found in 11 prefectures and cities in Hebei Province, including 82 districts/counties(82/175, 46.86%), of which the most severely affected was Qianan City(30 cases). A total of 239 clustering outbreaks were reported in all 11 prefectures and cities, 110(46.03%)of which were caused by family clusters. Qianxi County of Tangshan City, Zunhua City and Qianan City had the highest spatial-temporal clustering, and the clustering time was from Feb. 5 to 15(RR=15.69, LLR=61.75, P<0.01). Conclusion The entire population is susceptible to COVID-19. The early cases were mainly imported from other provinces, and in the later stage, cases were mainly local. Clustering outbreaks accounted for 2/3 of the total. No medical staff were infected. When the state initiated a first-level response, the epidemic had been effectively controlled. However, with the resumption of work and school and the increase of imported cases from abroad and asymptomatic infections, it is still necessary to strengthen regular epidemic prevention and control and maintain the favorable situation.

Key words: Coronavirus disease 2019, Hebei Province, Epidemiological characteristics, Spatial-temporal clustering

CLC Number: 

  • R181
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