PARSIPPANY, N.J.--(BUSINESS WIRE)---- $ZTS #animalhealth--Zoetis Inc. (NYSE: ZTS) today announced that the European Commission (EC) has granted marketing authorization for Poulvac® Procerta® HVT-ND, a recombinant vector vaccine for the protection of chickens against Newcastle disease (ND) and Marek’s disease viruses. The vaccine can be administered either in ovo or by subcutaneous injection at hatch, providing protection against both diseases with a single dose. Newcastle disease is a notifiable