Fretz P B, Babiuk L A, McLaughlin B
Can Vet J. 1979 Feb;20(2):58-61.
The serological results from this study clearly show that both equine influenza and equine rhinopneumonitis viruses were present during spring and autumn epidemics of respiratory disease on Western Canadian racetracks. Approximately 11% of the horses showed significant convalescent titres to influenza while 9% showed significant convalescent titres for equine viral pneumonitis. It was noted in our study a positive vaccination history corresponded with a reduction in the severity of the respiratory infection.
这项研究的血清学结果清楚地表明，在加拿大西部赛马场呼吸道疾病的春秋季流行期间，马流感病毒和马鼻肺炎病毒均有出现。约11%的马匹对流感显示出显著的恢复期抗体效价，而9%的马匹对马病毒性肺炎显示出显著的恢复期抗体效价。我们的研究发现，有阳性疫苗接种史与呼吸道感染严重程度的降低相关。
