A recurrent epizootic of proliferative tracheobronchitis in black korhaans.
D000818:Animals; D001715:Bird Diseases / Q000453:epidemiology* / Q000473:pathology; D001717:Birds; D001991:Bronchitis / Q000453:epidemiology / Q000473:pathology / Q000662:veterinary*; D002140:California; D004196:Disease Outbreaks / Q000662:veterinary*; D014136:Tracheitis / Q000453:epidemiology / Q000473:pathology / Q000662:veterinary*