About the Authors

Xiaoai Zhang

Contributed equally to this work with: Xiaoai Zhang, Yuli Cheng

Affiliations National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, State Key Laboratory for Infectious Disease Prevention and Control, Changping, Beijing, China, Beijing Center for Disease Prevention and Control, Beijing, China

Yuli Cheng

Contributed equally to this work with: Xiaoai Zhang, Yuli Cheng

Affiliation National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, State Key Laboratory for Infectious Disease Prevention and Control, Changping, Beijing, China

Yanwen Xiong

Affiliation National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, State Key Laboratory for Infectious Disease Prevention and Control, Changping, Beijing, China

Changyun Ye

Affiliation National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, State Key Laboratory for Infectious Disease Prevention and Control, Changping, Beijing, China

Han Zheng

Affiliation National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, State Key Laboratory for Infectious Disease Prevention and Control, Changping, Beijing, China

Hui Sun

Affiliation National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, State Key Laboratory for Infectious Disease Prevention and Control, Changping, Beijing, China

Hongqing Zhao

Affiliation National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, State Key Laboratory for Infectious Disease Prevention and Control, Changping, Beijing, China

Zhihong Ren

renzhihong@icdc.cn (ZR); xujianguo@icdc.cn (JX)

These authors also contributed equally to this work.

Affiliation National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, State Key Laboratory for Infectious Disease Prevention and Control, Changping, Beijing, China

Jianguo Xu

renzhihong@icdc.cn (ZR); xujianguo@icdc.cn (JX)

These authors also contributed equally to this work.

Affiliation National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, State Key Laboratory for Infectious Disease Prevention and Control, Changping, Beijing, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JX XZ ZR YC. Performed the experiments: XZ YC YX HS HZ. Analyzed the data: XZ YC ZR CY HZ. Contributed reagents/materials/analysis tools: XZ YC YX CY HZ. Wrote the paper: XZ YC ZR JX.