Infectious bursal disease virus

**Definition:** A species of AVIBIRNAVIRUS causing severe inflammation of the bursa of Fabricius in chickens and other fowl. Transmission is thought to be through contaminated feed or water. Vaccines have been used with varying degrees of success.

**Tree numbers:** - B04.820.223.500.060.400

**Synonyms:** - Avian Nephrosis Virus - Gumboro Disease Virus - Bursal Agent, Infectious - Infectious Bursal Agent - IBDV - Bursal Disease Virus, Infectious