Elazhary M A, Dea S, Mittal K R, Higgins R
Can Vet J. 1985 Jun;26(6):190-2.
The prevalence of antibodies to three etiological agents involved in swine pneumonia was determined in Quebec pig farms which had experienced problems of mild to severe respiratory problems. Of the 350 sera collected from adults pigs, 67.0%, 18.3% and 46.6% had antibody titers to Haemophilus pleuropneumoniae type 1 and/or 5, to porcine adenovirus type 4 and to swine influenza virus, respectively. Comparatively, the serological prevalence rates for Haemophilus pleuropneumoniae, porcine adenovirus and swine influenza virus were 43.7%, 0% and 3.3% in farms not experiencing respiratory problems.
在魁北克那些曾经历过轻度至重度呼吸道问题的猪场中,测定了与猪肺炎相关的三种病原体的抗体流行情况。在从成年猪采集的350份血清中,分别有67.0%、18.3%和46.6%的血清对1型和/或5型胸膜肺炎放线杆菌、4型猪腺病毒和猪流感病毒具有抗体效价。相比之下,在未出现呼吸道问题的猪场中,胸膜肺炎放线杆菌、猪腺病毒和猪流感病毒的血清流行率分别为43.7%、0%和3.3%。