title: Some immunological aspects of a recent Australian isolate of infectious bronchitis virus.
abstract: An infectious bronchitis virus, designated G48, isolated from birds during an outbreak of nephritis in a previously vaccinated broiler flock, overcame the resistance induced in birds vaccinated with 2 commercially available vaccines. Birds vaccinated with the A isolate of infectious bronchitis resisted challenge with this new virus. Cross neutralisation studies revealed that the new virus was serologically distinct from the 4 viruses tested. Homologous antiserum to G48 did not neutralise the other viruses and only antiserum to the A virus completely neutralised the new virus.
mesh_terms: D000818:Animals; D001315:Australia; D002645:Chickens / Q000382:microbiology*; D003332:Coronaviridae / Q000302:isolation & purification*; D003429:Cross Reactions; D000939:Epitopes; D001351:Infectious bronchitis virus / Q000276:immunology / Q000302:isolation & purification* / Q000472:pathogenicity; D009393:Nephritis / Q000401:mortality / Q000662:veterinary; D009500:Neutralization Tests; D011201:Poultry Diseases / Q000401:mortality; D014611:Vaccination
chemical_list: D000939:Epitopes