NPI data collection during COVID-19 epidemic
Local COVID-19 outbreaks were updated by official websites of Nanchang
Municipal Health Commission: http://hc.nc.gov.cn/ncwjw/index.shtml. The
time span of each outbreak and level of public health emergency response
(PHER) were determined according to the official announcement. According
to the documents issued by the local governments based on the Joint
Prevention and Control Mechanism about COVID-19, the start and end dates
of the lockdown of districts and other public places were collected.