Feng, Zhi-shan
Zhao, Li
Wang, Ji
Qiu, Fang-zhou
Zhao, Meng-chuan
Wang, Le
Duan, Su-xia
Zhang, Rui-qing
Chen, Chen
Qi, Ju-Ju
Fan, Tao
Li, Gui-xia
Ma, Xue-jun
Funding for this research was provided by:
National key research and development plan of China (2016YFC1202700, 2016YFC1200903 and 2017YFC1200503)
China Mega-Project for Infectious Disease (2017ZX10302301-004 and 2017ZX10104001)
Hebei Key Project Plan for Medical Science Research (20180616)
Article History
Received: 14 August 2018
Accepted: 19 September 2018
First Online: 30 October 2018
Ethics approval and consent to participate
: All aspects of the study were performed in accordance with national ethics regulations and approved by the Institutional Review Boards of National Institute for Viral Disease Control and Prevention, Center for Disease Control and Prevention of China.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.