Decreased Case Fatality Rate of COVID-19 in the Second Wave: a
study in 53 countries
Guihong Fan1, Zhichun Yang2,
Qianying Lin3, Shi Zhao4,5, Lin
Yang6, and Daihai He7,*
1 Mathematics Department, Columbus State University, US
2 School of Mathematical College, Chongqing Normal University,
Chongqing, China, 401331
3 Michigan Institute for Data Science, University of Michigan, Ann
Arbor, MI, United States
4 JC School of Public Health and Primary Care, Chinese University of
Hong Kong, Hong Kong SAR, China
5 Shenzhen Research Institute of Chinese University of Hong Kong,
Shenzhen, China
6 School of Nursing, Hong Kong Polytechnic University, Hong Kong, SAR,
China.
7 Department of Applied Mathematics, Hong Kong Polytechnic University,
Hong Kong Special Administrative Region, China
* Correspondence author: Daihai He, Department of Applied Mathematics,
Hong Kong Polytechnic University, Hong Kong, China. E-mail:
daihai.he@polyu.edu.hk;
Keywords: COVID-19; case fatality rate; influenza.
Running title: Time-varying case fatality rate of COVID-19
fan_guihong@columbusstate.edu
yangzhch@126.com
qianying@umich.edu