About the Authors

Aartjan J. W. te Velthuis

Affiliation Molecular Virology Laboratory, Department of Medical Microbiology, Center of Infectious Diseases, Leiden University Medical Center, Leiden, The Netherlands

Sjoerd H. E. van den Worm

Affiliation Molecular Virology Laboratory, Department of Medical Microbiology, Center of Infectious Diseases, Leiden University Medical Center, Leiden, The Netherlands

Amy C. Sims

Affiliation Departments of Epidemiology and Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America

Ralph S. Baric

Affiliation Departments of Epidemiology and Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America

Eric J. Snijder

e.j.snijder@lumc.nl (ES); m.j.van_hemert@lumc.nl (MJvH)

Affiliation Molecular Virology Laboratory, Department of Medical Microbiology, Center of Infectious Diseases, Leiden University Medical Center, Leiden, The Netherlands

Martijn J. van Hemert

e.j.snijder@lumc.nl (ES); m.j.van_hemert@lumc.nl (MJvH)

Affiliation Molecular Virology Laboratory, Department of Medical Microbiology, Center of Infectious Diseases, Leiden University Medical Center, Leiden, The Netherlands

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AJWtV SHEvdW EJS MJvH. Performed the experiments: AJWtV SHEvdW MJvH. Analyzed the data: AJWtV SHEvdW ACS RSB EJS MJvH. Contributed reagents/materials/analysis tools: ACS RSB. Wrote the paper: AJWtV EJS MJvH.