Infectious bursal disease (IBD)
Infectious Bursal Disease (Gumboro, IBD, infectious bursitis, infectious avian nephrosis) A highly contagious and fatal viral disease mostly affecting young birds aged between 3-6 weeks, caused by RNA virus belonging to the family Birnaviridae. The disease attacks the bursal component of the immune system resulting in immunosuppression due to the destruction of immature B lymphocytes and thereby increases susceptibility to secondary infect [...]