Avian Infectious Bronchitis (IB) is a highly contagious viral disease that primarily affects poultry, particularly chickens. It is caused by the avian infectious bronchitis virus (IBV), which targets the respiratory system, leading to symptoms such as coughing, sneezing, and nasal discharge. The disease can also impact egg production and quality in laying hens. The virus spreads easily through respiratory droplets and contaminated equipment, making it a significant concern for poultry farmers. Vaccination is a common preventive measure, but the virus can mutate, leading to different strains that may evade immunity. Early detection and management are crucial to control outbreaks.