Infectious bronchitis (IB) is an acute, highly contagious disease of chickens, caused by infectious bronchitis virus (IBV), which results in great economic losses to the poultry industry worldwide, despite the routine use of vaccines. Several outbreaks do occur periodically in densely populated poultry regions in Brazil and there are constant emergence of new variants. The aim of this paper is to review the current knowledge about IBV and IB, the distribution, strains and vaccines in Brazil.
infectious bronchitis; chicken; IBV; virus; coronavirus; fowl
