title: Booster effect of revaccination against Newcastle disease on chickens infected with infectious bursal disease virus.
mesh_terms: D000818:Animals; D002645:Chickens / Q000276:immunology; D006385:Hemagglutination Inhibition Tests; D007243:Infectious bursal disease virus; D009521:Newcastle Disease / Q000517:prevention & control*; D011201:Poultry Diseases / Q000276:immunology*; D012088:Reoviridae Infections / Q000276:immunology / Q000662:veterinary*; D014611:Vaccination / Q000662:veterinary*