1. Department of Epidemiological Sciences (DES); Animal Health and Veterinary Laboratories Agency - Weybridge; New Haw, Addlestone Surrey KT15 3NB UK
2. Department of Pathology; Animal Health and Veterinary Laboratories Agency - Weybridge; New Haw, Addlestone Surrey KT15 3NB UK
3. Department of Virology; Animal Health and Veterinary Laboratories Agency - Weybridge; New Haw, Addlestone Surrey KT15 3NB UK