Infectious bursal disease of chickens and vaccination.
D000818:Animals; D002060:Bursa of Fabricius; D002645:Chickens; D007243:Infectious bursal disease virus / Q000276:immunology; D011201:Poultry Diseases / Q000517:prevention & control*; D012088:Reoviridae Infections / Q000517:prevention & control / Q000662:veterinary*; D014611:Vaccination / Q000662:veterinary*