Data sources
Data
were collected from the daily epidemic reports released by Chinese
national and provincial health commissions, including numbers of
confirmed, suspected and recovered cases and death toll, etc.
(http://www.nhc.gov.cn/xcs/yqtb/list_gzbd.shtml). The definition of
confirmed case and severe pneumonia is based on the diagnosis and
treatment scheme released by the National Health Commission of China.
Interested data were collected from
January 21 to March 26 (reported
on March 27), 2020 in 34 provinces of China including: 1) new, daily and
cumulative confirmed cases; 2) new and cumulative death cases; 3) new
and cumulative recovered cases; 4) daily severe pneumonia. Outside
China, data were collected from daily
situation reports by World Health Organization including cumulative
confirmed and death cases
(https://www.who.int/emergencies/diseases/novel-coronavirus-2019/situation-reports/).