Emergence of a New Genotype of Avian Infectious Bronchitis Virus in Brazil

Infectious bronchitis virus (IBV) is the agent of a highly contagious disease that affects domestic fowl (Gallus gallus). Recent reports showed a high prevalence of one main IBV genotype (Brazil or BR-I) with low genetic diversity in commercial poultry flocks from Brazil. This research analyzed IBV positive poultry flocks from different rearing regions to verify the S1 gene variability and geographic distribution of variant IBV strains in recent...