1 Centre de Recerca en Sanitat Animal (CReSA), UAB-IRTA, Campus de la Universitat Autònoma de Barcelona, Bellaterra, Barcelona 08193, Spain; Institut de Recerca i tecnología Agroalimentaria (IRTA), Barcelona, Spain; The Pirbright Institute, Ash Road, Pirbright, GU24 0NF, United Kingdom.
2 Vaccine and Infectious Disease Organization (VIDO), Home of the International Vaccine Centre (InterVac), University of Saskatchewan, 120 Veterinary Road, Saskatchewan, Saskatoon S7N 5E3, Canada.