| infectious avian bronchitis | A specific infectious disease of young birds, caused by infectious bronchitis virus, a member of Coronaviridae, and associated with blocking of respiratory passages by exudate; it is highly transmissible, and often causes heavy losses of young chicks and heavy production losses among older laying birds. Synonym: gasping disease. (05 Mar 2000) |
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| infectious bronchitis virus | An RNA virus of the family Coronaviridae and the type species of the genus Coronavirus, causing infectious avian bronchitis, being most pathogenic in chicks up to about 4 weeks of age; not to be confused with avian infectious laryngotracheitis virus. (05 Mar 2000) |
| infectious bronchitis virus, avian | A species of coronavirus causing infections in chickens and possibly pheasants. Chicks up to 4 weeks old are the most severely affected. (12 Dec 1998) |
| fibrinous bronchitis | Inflammation of the bronchial mucous membrane, accompanied by a fibrinous exudation, which often forms a cast of the bronchial tree with severe obstruction of air flow. Synonym: plastic bronchitis, pseudomembranous bronchitis. (05 Mar 2000) |