1 Department of Veterinary Medicine, University of Bari Aldo Moro, Strada Prov. per Casamassima Km 3, 70010 Valenzano (BA), Italy. Electronic address: nicola.decaro@uniba.it.
2 Department of Veterinary Medicine, University of Bari Aldo Moro, Strada Prov. per Casamassima Km 3, 70010 Valenzano (BA), Italy. Electronic address: vito.martella@uniba.it.
3 Viruses and Emerging Pathogens Program, Infectious Diseases Institute, The Ohio State University, Columbus, 1680 Madison Ave, Wooster, OH 44691, USA; Food Animal Health Research Program, Ohio Agricultural Research and Development Center, CFAES, Department of Veterinary Preventive Medicine, The Ohio State, 1680 Madison Ave, Wooster, OH 44691, USA. Electronic address: saif.2@osu.edu.
4 Department of Veterinary Medicine, University of Bari Aldo Moro, Strada Prov. per Casamassima Km 3, 70010 Valenzano (BA), Italy. Electronic address: canio.buonavoglia@uniba.it.