1. Department of Veterinary Science and Public Health, University of Milan, Via Celoria 10, 20133 Milan, Italy
2. Department of Clinical Sciences “Luigi Sacco”, Section of Infectious Diseases, University of Milan, Via G.B. Grassi 74, 20157 Milan, Italy
3. Istituto Zooprofilattico Sperimentale dell’Umbria e delle Marche, Via G. Salvemini 1, 06126 Perugia, Italy
4. Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia Romagna, Via Bianchi 9, 25124 Brescia, Italy
5. Istituto Zooprofilattico Sperimentale della Sicilia “A. Mirri”, Via G.Marinuzzi 3, 90129 Palermo, Italy
6. Istituto Zooprofilattico Sperimentale Piemonte, Liguria e Valle D’Aosta, Via Bologna 148, 10154 Torino, Italy
7. Department of Infectious Parasitic and Immunomediated Diseases, National Institute of Health, Viale Regina Elena 299, 00161 Rome, Italy
8. University of Biomedical Campus, Via Álvaro del Portillo, 200, 00128 Rome, Italy