Avian infectious bronchitis virus (IBV) is a highly contagious virus that primarily affects poultry, particularly chickens. It belongs to the Coronaviridae family and can lead to respiratory disease, reduced egg production, and poor growth in infected birds. The virus spreads easily through respiratory droplets, contaminated equipment, and feed. Infection with IBV can cause various symptoms, including coughing, sneezing, and nasal discharge. Vaccination is a common preventive measure used in poultry farming to control the spread of the virus. Different strains of IBV exist, making it essential for farmers to monitor and manage outbreaks effectively.