About the Authors

Lisa C Lindesmith, Eric F Donaldson, Anna D LoBue, Jennifer L Cannon, Ralph S Baric
University of North Carolina-Chapel Hill, Chapel Hill, North Carolina, United States of America

Jennifer L Cannon, Du-Ping Zheng, Jan Vinje
Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America

Corresponding Author

ralph_baric@unc.edu

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

RSB designed the study and contributed to the writing of the paper. LCL designed the study, collected and analyzed the data, and contributed to the writing of the paper. EFD, ADL, and DPZ collected data, performed experiments, analyzed the data, and contributed to the writing of the paper. JLC collected data, performed experiments, and contributed to the writing of the paper. JV contributed to the writing of the paper.