About the Authors

Hang Xie

(Hang.Xie@fda.hhs.gov (HX); Zhiping.Ye@fda.hhs.gov (ZY)

Affiliation Laboratory of Respiratory Viral Diseases, Division of Viral Products, Office of Vaccine Research and Review, United States Food and Drug Administration, Bethesda, Maryland, United States of America

Xianghong Jing

Contributed equally to this work with: Xianghong Jing, Xing Li, Zhengshi Lin, Ewan Plant, Olga Zoueva

Affiliation Laboratory of Respiratory Viral Diseases, Division of Viral Products, Office of Vaccine Research and Review, United States Food and Drug Administration, Bethesda, Maryland, United States of America

Xing Li

Contributed equally to this work with: Xianghong Jing, Xing Li, Zhengshi Lin, Ewan Plant, Olga Zoueva

Affiliation Laboratory of Respiratory Viral Diseases, Division of Viral Products, Office of Vaccine Research and Review, United States Food and Drug Administration, Bethesda, Maryland, United States of America

Zhengshi Lin

Contributed equally to this work with: Xianghong Jing, Xing Li, Zhengshi Lin, Ewan Plant, Olga Zoueva

Affiliation Laboratory of Respiratory Viral Diseases, Division of Viral Products, Office of Vaccine Research and Review, United States Food and Drug Administration, Bethesda, Maryland, United States of America

Ewan Plant

Contributed equally to this work with: Xianghong Jing, Xing Li, Zhengshi Lin, Ewan Plant, Olga Zoueva

Affiliation Laboratory of Respiratory Viral Diseases, Division of Viral Products, Office of Vaccine Research and Review, United States Food and Drug Administration, Bethesda, Maryland, United States of America

Olga Zoueva

Contributed equally to this work with: Xianghong Jing, Xing Li, Zhengshi Lin, Ewan Plant, Olga Zoueva

Affiliation Laboratory of Respiratory Viral Diseases, Division of Viral Products, Office of Vaccine Research and Review, United States Food and Drug Administration, Bethesda, Maryland, United States of America

Hong Yang

Affiliation Office of Biostatistics and Epidemiology, Center for Biologics Evaluation and Research, United States Food and Drug Administration, Bethesda, Maryland, United States of America

Zhiping Ye

(Hang.Xie@fda.hhs.gov (HX); Zhiping.Ye@fda.hhs.gov (ZY)

Affiliation Laboratory of Respiratory Viral Diseases, Division of Viral Products, Office of Vaccine Research and Review, United States Food and Drug Administration, Bethesda, Maryland, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Performed the statistical analysis: HY HX. Conceived and designed the experiments: HX ZY. Performed the experiments: HX XJ XL ZL EP OZ ZY. Analyzed the data: HX. Wrote the paper: HX. Performed the statistical analysis: HY HX.