A novel coronavirus (2019-nCoV) causing severe acute respiratory disease emerged recently in Wuhan, China. Information on reported cases strongly indicates human-to-human spread, and the most recent information is increasingly indicative of sustained human-to-human transmission. While the overall severity profile among cases may change as more mild cases are identified, we estimate a risk of fatality among hospitalised cases at 14% (95% confidence interval: 3.9–32%).
Wu Peng, Hao Xinxin, Lau Eric H Y, Wong Jessica Y, Leung Kathy S M, Wu Joseph T, Cowling Benjamin J, Leung Gabriel M. (2020). Real-time tentative assessment of the epidemiological characteristics of novel coronavirus infections in Wuhan, China, as at 22 January 2020. European Centre for Disease Prevention and Control, 25(3)