In the event of an outbreak of Newcastle Disease, a compulsory vaccination zone is imposed. Two types of vaccine are available; inactivated and live vaccines. Live vaccines are more commonly used as they can be delivered by spray, drinking water or aerosolisation, whereas inactivated vaccines can only be delivered via direct innoculation. | In the event of an outbreak of Newcastle Disease, a compulsory vaccination zone is imposed. Two types of vaccine are available; inactivated and live vaccines. Live vaccines are more commonly used as they can be delivered by spray, drinking water or aerosolisation, whereas inactivated vaccines can only be delivered via direct innoculation. |