Monitoring disease transmissibility of 2019 novel coronavirus disease in Zhejiang, China

Ka Chun Chong; Wei Cheng; Shi Zhao; Feng Ling; Kirran N Mohammad; Maggie Haitian Wang; Benny Chung Ying Zee; Lei Wei; Xi Xiong; Hengyan Liu; Jingxuan Wang; Enfu Chen

doi:10.1016/j.ijid.2020.04.036

Monitoring disease transmissibility of 2019 novel coronavirus disease in Zhejiang, China

Int J Infect Dis. 2020 Jul:96:128-130. doi: 10.1016/j.ijid.2020.04.036. Epub 2020 May 15.

Authors

Affiliations

¹ The Chinese University of Hong Kong, Hong Kong SAR, China; Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China.
² Zhejiang Province Centre for Disease Control and Prevention, Hangzhou, Zhejiang Province, China.
³ The Chinese University of Hong Kong, Hong Kong SAR, China.
⁴ The Chinese University of Hong Kong, Hong Kong SAR, China. Electronic address: jxwang@link.cuhk.edu.hk.
⁵ Zhejiang Province Centre for Disease Control and Prevention, Hangzhou, Zhejiang Province, China. Electronic address: enfchen@cdc.zj.cn.

Abstract

Owing to the frequent travel connections between Wuhan and Zhejiang, Zhejiang was the third worst-affected province in China with 1,205 cases confirmed before 26 February 2020. The transmissibility of the 2019 novel coronavirus disease was monitored in Zhejiang, accounting for the transmissions from imported cases. Even though Zhejiang was one of the worst-affected provinces, an interruption of disease transmission (i.e. instantaneous reproduction numbers <1) was observed in early/mid-February after a comprehensive set of interventions combating the outbreak.

Keywords: COVID-19; Reproduction number; Serial interval; Travel restriction; Zhejiang.

MeSH terms

Basic Reproduction Number
Betacoronavirus*
COVID-19
China / epidemiology
Coronavirus Infections / epidemiology
Coronavirus Infections / transmission*
Humans
Pandemics
Pneumonia, Viral / epidemiology
Pneumonia, Viral / transmission*
SARS-CoV-2