Rapid detection of subtype B avian metapneumoviruses using RT-PCR restriction endonuclease digestion indicates field circulation of vaccine-derived viruses in older turkeys
1. Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Italy;2. Department of Animal Medicine, Production and Health, University of Padua, Legnaro, Italy;3. Tre Valli Laboratory, Verona, Italy