1. 1Faculty of Veterinary Medicine, Department Pathobiology, Pathology Division, Utrecht University, Utrecht, 3584CL, The Netherlands
2. †Present address: Gupta Strategists, Ophemert, The Netherlands.
3. 2Boehringer Ingelheim Veterinary Research Center GmbH & Co. KG, Hannover, Germany
4. 3Faculty of Veterinary Medicine, Department Infectious Diseases and Immunology, Immunology Division, Utrecht University, Utrecht, 3584CL, The Netherlands
5. 4Boehringer Ingelheim Animal Health Operations BV, Weesp, The Netherlands
6. ‡Present address: Intravacc Animal Research Centre, Ponwalla Science Park, The Netherlands.
7. §Present address: Thermo Fisher Scientific, 8211AR Lelystad, The Netherlands.
8. 5Faculty of Veterinary Medicine, Department Infectious Diseases and Immunology, Virology Division, Utrecht University, Utrecht, 3584CL, The Netherlands