About the Authors
- Ben S Cooper, Richard J Pitman, W. John Edmunds, Nigel J Gay
- Statistics, Modelling, and Bioinformatics Department, Centre for Infections, Health Protection Agency, London, United Kingdom
The authors have declared that no competing interests exist.
BSC, WJE, and NJG conceived the study. RJP obtained and processed the travel data. BSC implemented and analysed the model. All authors contributed to writing the manuscript.