1. Department of Molecular and Medical Virology, Ruhr University Bochum, Bochum, Germany
2. Institute of Virology, University of Veterinary Medicine Hannover, Hanover, Germany
3. Clinic for Horses, University of Veterinary Medicine Hannover, Hanover, Germany
4. Department of Pathology, University of Veterinary Medicine Hannover, Hanover, Germany
5. Institute of Experimental Virology, TWINCORE Centre for Experimental and Clinical Infection Research, Hanover, Germany
6. Clinical Section of Equine Internal Medicine, Department of Companion Animals and Horses, University of Veterinary Medicine Vienna, Vienna, Austria
7. European Virus Bioinformatics Center (EVBC), Jena, Germany