AVIAN CORONAVIRUS IN EGYPT: EPIDEMIOLOGICAL ACUITIES AND PATHOGENICITY IN COMMERCIAL BROILER CHICKENS
Infectious bronchitis virus (IBV), a gamma coronavirus, is responsible for a highly contagious disease in chickens resulting in substantial economic losses to the poultry industry around the world.The emergence of new types of IBVs is considered one of the major concerns regarding to IB.A preliminary diagnosis of IB was made based on the flock hist