摘要
To the Editor:At the end of 2019,an outbreak of novel coronavirus disease 2019(COVID-19),caused by 2019-nCov,causing widespread novel coronavirus disease.This outbreak of COVID-19 occurred during the period of the 2020 Spring Festival in China,a period known for massive population movements within China.This has resulted in large numbers of infected patients as a consequence of multiple human contact episodes in individual travelers.
基金
This work was supported by the Chongqing Special Research Project for Prevention and Control of Novel Coronavirus Pneumonia(No.cstc2020jscx-fyzx0074)。
