Schipper I A, Kelling C L
Can J Comp Med. 1975 Oct;39(4):402-5.
Sixty-five calves of approximately three months of age and of mixed sex were vaccinated twice at four week intervals with either attenuated or inactivated infectious bovine rhinotracheitis vaccines. Following initial vaccination there was no demonstrable serum infectious bovine rhinotracheitis titer in any of the calves receiving the inactivated vaccine with 20.7% of the calves receiving the attenuated vaccines having demonstrable titers. Following a second administration of vaccine at eight weeks post-initial vaccination 63.9% of the calves receiving the inactivated vaccine had no demonstrable titer with 72.4% of the calves receiving the attenuated vaccine exhibiting a blood titer of four or greater.
65头年龄约三个月、性别混合的小牛，每隔四周用减毒或灭活传染性牛鼻气管炎疫苗接种两次。初次接种后，接受灭活疫苗的小牛中没有一头有可检测到的血清传染性牛鼻气管炎滴度，而接受减毒疫苗的小牛中有20.7%有可检测到的滴度。在初次接种后八周进行第二次疫苗接种后，接受灭活疫苗的小牛中有63.9%没有可检测到的滴度，而接受减毒疫苗的小牛中有72.4%的血液滴度为4或更高。
