Ndv mutant, live and inactivated vaccines against newcastle disease in birds, use of an ndv mutant, and process of protecting birds against nd

摘要

"NDV MUTANT, LIVE AND INACTIVATED AGAINST NEWCASTLE DISEASE IN BIRDS, USE OF AN NDV MUTANT, AND, BIRD PROTECTION AGAINST ND" The present invention provides an NDV mutant that is suitable as a vaccine candidate for a vaccination MU in ovo MV. The mutant expresses reduced levels of protein V and can safely be administered to chicken embryos before hatching.