Epidemiological characteristics and the entire evolution of coronavirus disease 2019 in Wuhan, China
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RESEARCH
Open Access
Epidemiological characteristics and the entire evolution of coronavirus disease 2019 in Wuhan, China Dongming Wang1,2†, Jing Cai3†, Tingming Shi4†, Yang Xiao1,2, Xiaobing Feng1,2, Meng Yang1,2, Wenzhen Li5, Wei Liu1,2, Linling Yu1,2, Zi Ye1,2, Tao Xu1,2, Jixuan Ma1,2, Mingyan Li3* and Weihong Chen1,2*
Abstract Background: Coronavirus Disease 2019 (COVID-19) spread rapidly around the world. We aimed to describe the epidemiological characteristics and the entire evolution of COVID-19 in Wuhan, and to evaluate the effect of nonpharmaceutical intervention by the government. Methods: The information of COVID-19 cases until Mar 18, 2020 in Wuhan were collected from the national infectious disease surveillance system in Hubei province. Results: A total of 49,973 confirmed cases were reported until Mar 18, 2020 in Wuhan. Among whom, 2496 cases died and the overall mortality was 5.0%. Most confirmed cases (25,619, 51.3%) occurred during Jan 23 to Feb 4, with a spike on Feb 1 (new cases, 3374). The number of daily new cases started to decrease steadily on Feb 19 (new cases, 301) and decreased greatly on Mar 1 (new cases, 57). However, the mortality and the proportion of severe and critical cases has been decreasing over time, with the lowest of 2.0 and 10.1% during Feb 16 to Mar 18, 2020, respectively. The percentage of severe and critical cases among all cases was 19.6%, and the percentage of critical and dead cases aged over 60 was 70.1 and 82.0%, respectively. Conclusion: The number of new cases has dropped significantly after the government taking the isolation of four types of personnel and the community containment for 14 days. Our results indicate that the mortality and proportion of severe and critical cases gradually decreased over time, and critical and dead cases are more incline to be older individuals. Keywords: Coronavirus disease 2019 (COVID-19), Epidemiological characteristics, Evolution, Non-pharmaceutical interventions
* Correspondence: [email protected]; [email protected] † Dongming Wang, Jing Cai and Tingming Shi contributed equally to this work. 3 Institute of Preventive Medicine Information, Hubei Provincial Center for Disease Control and Prevention, Wuhan 430079, Hubei, China 1 Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, China Full list of author information is available at the end of the article © The Author(s). 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If
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