About the Authors

Erik M. Volz

e.volz@imperial.ac.uk

Affiliation Department of Infectious Disease Epidemiology, Imperial College London, London, United Kingdom

Simon D. W. Frost

Affiliation Department of Veterinary Medicine, University of Cambridge, Cambridge, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: EMV SDWF. Performed the experiments: EMV SDWF. Analyzed the data: EMV SDWF. Contributed reagents/materials/analysis tools: EMV SDWF. Wrote the paper: EMV SDWF.