1. Department of Veterinary Medicine and Animal Sciences University of Milan Lodi Italy
2. Department of Virology Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia‐Romagna Brescia Italy
3. I‐VET srl, Laboratorio di Analisi Veterinarie Flero Brescia Italy
4. Department of Veterinary Medicine University of Bari Aldo Moro Valenzano Bari Italy