1. Veterinary Directorate; DEFRA; Room 601, 1A Page Street London SWIP 4PQ
2. Epidemiology Department; Veterinary Laboratories Agency - Weybridge; New Haw, Addlestone Surrey KT15 3NB
3. Department of Infectious and Tropical Diseases, London School of Hygiene; University of London; Keppel Street London WICE 7HT