1. Sciensano Avian Virology and Immunology Service AI/ND Reference Laboratory for Belgium and GD Luxembourg Brussels Belgium
2. Federal Agency for the Safety of the Food Chain General Direction Control Policy The Belgian Federal Government Brussels Belgium
3. Department of Infection and Immunity Luxembourg Institute of Health Esch‐sur‐Alzette Luxembourg
4. Laboratory of Veterinary Medicine Veterinary Services Administration Ministry of Agriculture, Viticulture and rural Development Dudelange Luxembourg
5. Division of Virology AI/ND Reference Laboratory for the Netherlands Wageningen Bioveterinary Research Lelystad The Netherlands