Bohlender R E
Mod Vet Pract. 1984 Aug;65(8):606-9.
A vaccine against bovine respiratory syncytial virus (BRSV: Norden), a cause of pulmonary edema-emphysema and pneumonia in calves, was evaluated in field trials on western Nebraska beef calves at branding, preweaning, weaning and postweaning. Of calves with undifferentiated respiratory infection at weaning, 20.9% of 2-dose vaccinates (169/810) and 27.5% of 1-dose vaccinates (230/837) required treatment, vs 48.2% of unvaccinated controls (397/823). At postweaning, 2.4% of 2-dose vaccinates (13/548) and 4.7% of 1-dose vaccinates (28/598) required treatment, vs 20.5% of controls (181/885). Studies in the 2 subsequent years revealed 11.3% of calves vaccinated at preweaning (263/2312) required treatment, vs 24.4% of controls (387/1587). Average costs from respiratory disease in 5 herds ranged from $12.83/head to $46.99/head before BRSV vaccination and 4/head to 54/head after vaccination.
一种针对牛呼吸道合胞病毒（BRSV：诺登株）的疫苗在西内布拉斯加州肉牛犊的田间试验中进行了评估，该病毒是犊牛肺水肿 - 肺气肿和肺炎的病因，试验分别在烙印期、断奶前、断奶时和断奶后进行。在断奶时患有未分化呼吸道感染的犊牛中，两剂接种疫苗的犊牛中有20.9%（169/810）和一剂接种疫苗的犊牛中有27.5%（230/837）需要治疗，而未接种疫苗的对照组中有48.2%（397/823）需要治疗。在断奶后，两剂接种疫苗的犊牛中有2.4%（13/548）和一剂接种疫苗的犊牛中有4.7%（28/598）需要治疗，而对照组中有20.5%（181/885）需要治疗。随后两年的研究显示，断奶前接种疫苗的犊牛中有11.3%（263/2312）需要治疗，而对照组中有24.4%（387/1587）需要治疗。在5个牛群中，BRSV疫苗接种前呼吸道疾病的平均成本为每头12.83美元至46.99美元，接种后为每头4美元至54美元。
