Pasick J
Canadian Food Inspection Agency, National Centre for Foreign Animal Disease, Winnipeg, Manitoba.
Can J Vet Res. 1998 Oct;62(4):241-4.
The lentiviruses responsible for causing maedi-visna or ovine progressive pneumonia in sheep and caprine arthritis-encephalitis in goats have long been considered distinct, albeit related, viral species. Evidence, primarily in the form of nucleic acid sequence data, suggests this distinction may not be as absolute as once thought. These lentiviruses might better be viewed in the context of viral quasispecies whose individual members exhibit varying host range and pathogenic capabilities. Implications for diagnostic testing and control of these diseases are discussed.
长期以来，人们一直认为导致绵羊梅迪 - 维斯纳病或绵羊进行性肺炎以及山羊关节炎 - 脑炎的慢病毒是不同的病毒种类，尽管它们之间存在关联。主要以核酸序列数据形式存在的证据表明，这种区分可能不像曾经认为的那样绝对。这些慢病毒或许更适合在病毒准种的背景下看待，其个体成员表现出不同的宿主范围和致病能力。本文讨论了这些疾病在诊断检测和防控方面的意义。
