About the Authors

Tracy J. Ruckwardt

Affiliation Vaccine Research Center, National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, Maryland, United States of America

Allison M. W. Malloy

Affiliation Vaccine Research Center, National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, Maryland, United States of America

Kaitlyn M. Morabito

Affiliation Vaccine Research Center, National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, Maryland, United States of America

Barney S. Graham

bgraham@nih.gov

Affiliation Vaccine Research Center, National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, Maryland, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: TJR AMWM BSG. Performed the experiments: TJR AMWM KMM BSG. Analyzed the data: TJR AMWM BSG. Wrote the paper: TJR BSG.