Dynamics of the coronavirus disease 2019 (COVID-19) epidemic in Wuhan City, Hubei Province and China: a second derivative analysis of the cumulative daily diagnosed cases during the first 85 days.

Background: Controlling the coronavirus disease 2019 (COVID-19) epidemic requires information beyond new and cumulative cases. This study aims to conduct an in-depth analysis by geographic strata: Wuhan City (hereafter referred to as Wuhan) only, Hubei Province (hereafter referred to as Hubei) excluding Wuhan, and China excluding Hubei.

Methods: Daily cumulative confirmed COVID-19 cases between December 8, 2019 (the date of symptom onset based on patients' recall during the investigation), and March 1, 2020, from official sources and published studies were analyzed.

Levels of economic growth and cross-province spread of the COVID-19 in China.

Background: After the first COVID-19 case detected on 8 December 2019 in Wuhan, the Provincial Capital of Hubei, the epidemic quickly spread throughout the whole country of China. Low developmental levels are often associated with infectious disease epidemic, this study attempted to test this notion with COVID-19 data.

Methods: Data by province from 8 December 2019 to 16 February 2020 were analysed using regression method.