About the Authors

Xiang He

Affiliation State Key Laboratory for Infectious Disease Prevention and Control, National Center for AIDS/STD Control and Prevention, China Centers for Disease Control, Beijing, China

Hui Xing

Affiliation State Key Laboratory for Infectious Disease Prevention and Control, National Center for AIDS/STD Control and Prevention, China Centers for Disease Control, Beijing, China

Yuhua Ruan

Affiliation State Key Laboratory for Infectious Disease Prevention and Control, National Center for AIDS/STD Control and Prevention, China Centers for Disease Control, Beijing, China

Kunxue Hong

Affiliation State Key Laboratory for Infectious Disease Prevention and Control, National Center for AIDS/STD Control and Prevention, China Centers for Disease Control, Beijing, China

Chunlin Cheng

Affiliation State Key Laboratory for Infectious Disease Prevention and Control, National Center for AIDS/STD Control and Prevention, China Centers for Disease Control, Beijing, China

Yuanyuan Hu

Affiliation State Key Laboratory for Infectious Disease Prevention and Control, National Center for AIDS/STD Control and Prevention, China Centers for Disease Control, Beijing, China

Ruolei Xin

Affiliation State Key Laboratory for Infectious Disease Prevention and Control, National Center for AIDS/STD Control and Prevention, China Centers for Disease Control, Beijing, China

Jing Wei

Affiliation State Key Laboratory for Infectious Disease Prevention and Control, National Center for AIDS/STD Control and Prevention, China Centers for Disease Control, Beijing, China

Yi Feng

Affiliation State Key Laboratory for Infectious Disease Prevention and Control, National Center for AIDS/STD Control and Prevention, China Centers for Disease Control, Beijing, China

Jenny H. Hsi

Affiliation State Key Laboratory for Infectious Disease Prevention and Control, National Center for AIDS/STD Control and Prevention, China Centers for Disease Control, Beijing, China

Yutaka Takebe

Affiliations State Key Laboratory for Infectious Disease Prevention and Control, National Center for AIDS/STD Control and Prevention, China Centers for Disease Control, Beijing, China, AIDS Research Center, National Institute of Infectious Diseases, Tokyo, Japan

Yiming Shao

yshao08@gmail.com

Affiliation State Key Laboratory for Infectious Disease Prevention and Control, National Center for AIDS/STD Control and Prevention, China Centers for Disease Control, Beijing, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: YS XH YR HX. Performed the experiments: CC YH RX JW. Analyzed the data: XH YR YT KH YF YS. Contributed reagents/materials/analysis tools: YS XH HX FY. Wrote the paper: XH YT JHH YS. Sample collection and epidemiologic survey: Members of the Group for Molecular Epidemiologic Survey.