1. Istituto Zooprofilattico Sperimentale del Mezzogiorno, Unit of Virology, Portici, Italy
2. Department of Veterinary Medicine and Animal Production, Unit of Pathology, University of Naples Federico II, Napoli, Italy
3. Department of Pharmacy (DIFARMA), University of Salerno, Fisciano, Italy
4. Istituto Zooprofilattico Sperimentale del Mezzogiorno, Unit of Diagnostics, Portici, Italy
5. Department of Veterinary Medicine and Animal Production, Unit of Microbiology, University of Naples Federico II, Napoli, Italy
6. Istituto Zooprofilattico Sperimentale del Mezzogiorno, Portici, Italy