1. Bristol Veterinary School Faculty of Health Science University of Bristol Bristol UK
2. Pathology Department Animal and Plant Health AgencyAPHA‐Weybridge Addlestone UK
3. Virology Department Animal and Plant Health AgencyAPHA‐Weybridge Addlestone UK
4. Laboratoires Théa Clermont‐Ferrand France
5. National Institute for Biological Standards and Control Potters Bar UK
6. Public Health England – Colindale London UK