1. National Public Health Service for Wales, Cardiff, United Kingdom
2. Health Protection Agency, London, United Kingdom
3. Department for Environment, Food and Rural Affairs, Gloucestershire, United Kingdom
4. Gloucester Hospitals National Health Service Trust (formerly Gloucester Public Health Laboratory), Gloucester, United Kingdom
5. Health Protection Agency (West Midlands) Regional Surveillance Unit, Birmingham, United Kingdom
6. Veterinary Laboratories Agency, Weybridge, United Kingdom
7. Gloucestershire Health Protection Unit, Gloucester, United Kingdom