Duration of immunity acquired by vaccination with the live attenuated vaccine Avishield IB H120 against infectious bronchitis virus in SPF chickens

Lana LJUMA SKUPNJAK*, mag. ing. biotechn., (Corresponding author, e-mail: lana.ljuma.skupnjak@dechra.com), Anto VRDOLJAK, PhD, Nikol OČURŠĆAK, DVM, Genera Inc. (part of Dechra Pharmaceuticals PLC), Rakov Potok, Croatia