1. Institute for Experimental Virology TWINCORE Centre for Experimental and Clinical Infection Research Medical School Hannover (MHH) Helmholtz Centre for Infection Research (HZI) Hannover Germany
2. Clinic for Horses University of Veterinary Medicine Hannover, Foundation Hannover Germany
3. Department of Pathology University of Veterinary Medicine Hannover Germany
4. Department of Molecular and Medical Virology Ruhr‐University Bochum Bochum Germany
5. Institute of Medical Microbiology, Virology and Hygiene University Medical Centre Hamburg‐Eppendorf Hamburg Germany
6. German Center for Infection Research Partner Site Hamburg‐Borstel‐Lübeck‐Riems Hamburg Germany
7. Liphook Equine Hospital Liphook United Kingdom
8. Department for Companion Animals and Horses University of Veterinary Medicine Vienna Austria