1. Department of Pathobiology and Population Scienes, Royal Veterinary College, Hawkshead Lane, Hatfield, Hertfordshire, AL9 7TA, UK
2. Pathology Department, Animal and Plant Health Agency (APHA-Weybridge), Woodham Lane, New Haw, Addlestone KT15 3NB, UK
3. Diagnostic & Consultant Avian Pathology, Pathology Department, Animal and Plant Health Agency (APHA-Lasswade), Pentlands Science Park, Bush Loan, Penicuik, Midlothian EH26 0PZ, UK
4. Starcross Veterinary Investigation Centre, Animal and Plant Health Agency, Staplake Mount, Starcross, Devon, EX6 8PE, UK
5. British Divers Marine Life Rescue, Lime House, Regency Close, Uckfield, East Sussex TN22 1DS, UK
6. Virology Department, Animal and Plant Health Agency (APHA-Weybridge), Woodham Lane, New Haw, Addlestone KT15 3NB, UK
7. OIE/FAO/EURL International Reference Laboratory for avian influenza, swine influenza and Newcastle Disease, Animal and Plant Health Agency (APHA) - Weybridge, Addlestone, Surrey, KT15 3NB, UK