Shahnas Najimudeen

1. IntroductionInfectious bronchitis (IB) is a contagious viral disease caused by a gamma coronavirus known as infectious bronchitis virus (IBV) [1]. IB is one of the most prevalent respiratory diseases in the poultry industry in Canada and elsewhere and it causes significant mortality and morbidity in both broiler and layer chickens, resulting in significant economic impacts to the poultry indust ...