Combination vaccine for use in protecting chickens against newcastle disease vaccination kit to immunize chickens against newcastle disease and process for preventing newcastle disease in chickens

摘要

The present invention provides a combination vaccine for use in the protection of poultry against ND comprising an expression system, such as a virus vector, expressing a NDV immunogenic protein, and a live NDV vaccine strain. It is demonstrated that such a combination vaccine affords good local and systemic protection.