About the Authors

Qiuyan Liao

Contributed equally to this work with: Qiuyan Liao, Jun Yuan, Eric H. Y. Lau, Guang Yan Chen, Zhi Cong Yang

Affiliation School of Public Health, the University of Hong Kong, Hong Kong, People’s Republic of China

Jun Yuan

Contributed equally to this work with: Qiuyan Liao, Jun Yuan, Eric H. Y. Lau, Guang Yan Chen, Zhi Cong Yang

Affiliation Guangzhou Center for Disease Control and Prevention, Guangzhou, People’s Republic of China

Eric H. Y. Lau

Contributed equally to this work with: Qiuyan Liao, Jun Yuan, Eric H. Y. Lau, Guang Yan Chen, Zhi Cong Yang

Affiliation School of Public Health, the University of Hong Kong, Hong Kong, People’s Republic of China

Guang Yan Chen

Contributed equally to this work with: Qiuyan Liao, Jun Yuan, Eric H. Y. Lau, Guang Yan Chen, Zhi Cong Yang

Affiliation Panyu Center for Disease Control and Prevention, Guangzhou, People’s Republic of China

Zhi Cong Yang

Contributed equally to this work with: Qiuyan Liao, Jun Yuan, Eric H. Y. Lau, Guang Yan Chen, Zhi Cong Yang

yangzc@gzcdc.org.cn

Affiliation Guangzhou Center for Disease Control and Prevention, Guangzhou, People’s Republic of China

Xiao Wei Ma

Affiliation Guangzhou Center for Disease Control and Prevention, Guangzhou, People’s Republic of China

Jian Dong Chen

Affiliation Guangzhou Center for Disease Control and Prevention, Guangzhou, People’s Republic of China

Yan Hui Liu

Affiliation Guangzhou Center for Disease Control and Prevention, Guangzhou, People’s Republic of China

Chang Wang

Affiliation Guangzhou Center for Disease Control and Prevention, Guangzhou, People’s Republic of China

Xiao Ping Tang

Affiliation The Eighth People’s Hospital of Guangzhou, Guangzhou, People’s Republic of China

Yu Fei Liu

Affiliation Guangzhou Center for Disease Control and Prevention, Guangzhou, People’s Republic of China

Li Zhuo

Affiliation The Eighth People’s Hospital of Guangzhou, Guangzhou, People’s Republic of China

Gabriel M. Leung

Affiliation School of Public Health, the University of Hong Kong, Hong Kong, People’s Republic of China

Wei Zhang

Affiliation Guangdong Center for Disease Control and Prevention, Guangzhou, People’s Republic of China

Benjamin J. Cowling

Affiliation School of Public Health, the University of Hong Kong, Hong Kong, People’s Republic of China

Ming Wang

‡ These authors also contributed equally to this work.

Affiliation Guangzhou Center for Disease Control and Prevention, Guangzhou, People’s Republic of China

Richard Fielding

‡ These authors also contributed equally to this work.

Affiliation School of Public Health, the University of Hong Kong, Hong Kong, People’s Republic of China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: QL JY EHYL GYC MW RF. Performed the experiments: QL JY GYC ZCY XWM JDC YHL CW XPT YFL LZ WZ MW RF. Analyzed the data: QL JY EHYL GYC ZCY. Contributed reagents/materials/analysis tools: QL JY EHYL GYC ZCY XWM JDC YHL CW XPT YFL LZ GML WZ BJC MW RF. Wrote the paper: QL JY EHYL GYC ZCY XWM JDC YHL CW XPT YFL LZ GML WZ BJC MW RF.