IBV Study Compares Vaccine Protocols for Cal-99 Variant
US - Vaccination with Massachusetts and Arkansas infectious bronchitis virus (IBV) serotypes followed by a booster provided the best protection against a contemporary California 99 (Cal-99) IBV variant in a recent challenge study, Kalen Cookson, DVM, MAM, a technical services veterinarian with Zoetis Inc., said at the 2015 Western Poultry Disease Conference held in Sacramento [1].