1. Real-time Syndromic Surveillance Team, Health Protection Agency, Birmingham, United Kingdom
2. Royal College of General Practitioners Research and Surveillance Centre, Birmingham, United Kingdom
3. Department of Mathematics and Statistics, University of Strathclyde, Glasgow, United Kingdom
4. Health Protection Scotland, Glasgow, United Kingdom
5. Centre for Radiation, Chemicals and Environmental Hazards, Health Protection Agency, Birmingham, United Kingdom
6. Centre for Radiation, Chemicals and Environmental Hazards, Health Protection Agency, London, United Kingdom
7. Centre for Infections, Health Protection Agency, London, United Kingdom
8. London Regional Director’s Office, Health Protection Agency, London, United Kingdom