Glisson J R, Fletcher O J
Avian Dis. 1987 Apr-Jun;31(2):383-5.
Twelve-to-fourteen-week-old broiler breeder pullets and cockerels from two different companies were found to have encephalitis 2 weeks after vaccination with avian encephalomyelitis (AE) vaccine. Histologic examination and virus isolation indicated that affected chickens had AE. All chickens had been vaccinated with either one of two serials of AE vaccine approximately 2 weeks before the onset of clinical signs.
来自两家不同公司的12至14周龄肉种鸡母鸡和公鸡在接种禽脑脊髓炎(AE)疫苗2周后出现脑炎症状。组织学检查和病毒分离表明,患病鸡患有AE。所有鸡在临床症状出现前约2周接种了两种AE疫苗系列中的一种。