About the Authors

Kim L. Roberts

Current address: Department of Microbiology, Moyne Institute of Preventive Medicine, Trinity College, Dublin, Ireland

Holly Shelton

Current address: Institute for Animal Health, Compton Laboratory, Newbury, United Kingdom

Peter Stilwell
Wendy S. Barclay


Affiliation Section of Virology, Department of Infectious Disease, Faculty of Medicine, Imperial College London, London, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KLR HS WSB. Performed the experiments: KLR HS PS. Analyzed the data: KLR HS WSB. Contributed reagents/materials/analysis tools: KLR HS. Wrote the paper: KLR HS WSB.