论文部分内容阅读
半个世纪前,从德国引进Karakal公羊的冰岛牧场中,羊发生了肺和神经性疾病。其中,Maedi病(一种间质性肺炎)和Visna病(绵羊脱髓鞘性脑白质病,是一种麻痹性疾病)成为流行病,在采取坚决的根治方案控制流行之前,夺去了10多万头动物的生命。 Sigurdsson对Visna和Maedi病进行了研究,证实这两种病是由一种滤过性因子传递的。滤过性因子侵入宿主体内后。经过长时间才发生明显的疾病。Sigurdsson用“慢感染”来命名它,以表明这些感染新的时间表(几个月甚至多年)。他对慢感染病毒学和病理学的早期研究作出了许多贡献。
Half a century ago, sheep and neurological diseases occurred in sheep in the Icelandic pastures that introduced Karakal rams from Germany. Among them, Maedi’s disease (an interstitial pneumonia) and Visna’s disease (sheep demyelinating leukoencephalopathy, a paralytic disease) have become epidemic, killing 10 (10) before decimating a pandemic Tens of thousands of animal life. Sigurdsson’s study of Visna and Maedi disease confirmed that the two diseases are transmitted by a filter factor. Viability factors invade the host body. After a long time before significant disease occurred. Sigurdsson names it “slow infection” to indicate a new timeline (months or years) for these infections. He made a number of contributions to earlier studies of virology and pathology of slow infection.