About the Authors

Shuang Meng
Jianguo Xu
Yanwen Xiong
Changyun Ye

yechangyun@icdc.cn

Affiliation State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Changping, Beijing, People's Republic of China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SM CY JX. Performed the experiments: SM. Analyzed the data: SM YX. Contributed reagents/materials/analysis tools: SM YX. Wrote the paper: SM CY.