About the Authors

Ming-Hua Li

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

Shi-Hong Fu

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

Wei-Xin Chen

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

Huan-Yu Wang

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

Yu-Hong Guo

Affiliation National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China

Qi-Yong Liu

Affiliation National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China

Yi-Xing Li

Affiliation Chinese Center for Disease Control and Prevention, Beijing, China

Hui-Ming Luo

Affiliation Chinese Center for Disease Control and Prevention, Beijing, China

Wa Da

Affiliation Tibet Center for Disease Control and Prevention, Tibet, China

Dun Zhu Duo Ji

Affiliation Tibet Center for Disease Control and Prevention, Tibet, China

Xiu-Min Ye

Affiliation Tibet Center for Disease Control and Prevention, Tibet, China

Guo-Dong Liang

gdliang@hotmail.com

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

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: M-HL H-YW G-DL. Performed the experiments: M-HL S-HF W-XC. Analyzed the data: M-HL S-HF H-YW G-DL. Contributed reagents/materials/analysis tools: Y-HG Q-YL Y-XL H-ML WD DZDJ X-MY. Wrote the paper: M-HL G-DL.