1. Virology Department, Animal and Plant Health Agency, Addlestone, Surrey, United Kingdom
2. WOAH/FAO International Reference Laboratory for Avian Influenza, Swine Influenza and Newcastle Disease, Animal and Plant Health Agency (APHA-Weybridge), Addlestone, Surrey, United Kingdom
3. School of Biological Sciences, University of Manchester, Manchester, United Kingdom
4. Agri-Food and Bioscience Institute, Belfast, United Kingdom
5. Veterinary Exotics and Notifiable Disease Unit, Animal and Plant Health Agency, Addlestone, Surrey, United Kingdom
6. Department of Pathology and Population Sciences, Royal Veterinary College, University of London, Hertfordshire, United Kingdom
7. Worldwide Influenza Centre, The Francis Crick Institute, London, United Kingdom