About the Authors

William B. Messer

Affiliation Division of Infectious Diseases, Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, North Carolina, United States of America

Boyd Yount

Affiliation Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina, United States of America

Kari E. Hacker

Affiliation Department of Microbiology and Immunology, and Southeast Regional Center of Excellence for Biodefense and Emerging Infectious Diseases Research, University of North Carolina School of Medicine, Chapel Hill, North Carolina, United States of America

Eric F. Donaldson

Affiliation Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina, United States of America

Jeremy P. Huynh

Affiliation Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina, United States of America

Aravinda M. de Silva

aravinda_desilva@med.unc.edu (AMdS); rbaric@email.unc.edu (RSB)

Affiliation Department of Microbiology and Immunology, and Southeast Regional Center of Excellence for Biodefense and Emerging Infectious Diseases Research, University of North Carolina School of Medicine, Chapel Hill, North Carolina, United States of America

Ralph S. Baric

aravinda_desilva@med.unc.edu (AMdS); rbaric@email.unc.edu (RSB)

Affiliation Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: WBM BY KEH EFD AMdS RSB. Performed the experiments: WBM BY KEH JPH. Analyzed the data: WBM AMdS RSB. Contributed reagents/materials/analysis tools: WBM EFD BY KEH. Wrote the paper: WBM BY KEH EFD AMdS RSB.