简称SVI。潜伏期非常长的病毒感染性疾病的总称。也称为迟发性病毒感染症。发病以后病情进展相当迅速且几乎不会好转而死亡。多侵犯哺乳类的中枢神经〔水貂的脑病、羊的痒跃病（Scarpie）、人的Kuru及亚急性硬化性全脑炎（Subacutescleros-ing pancephalitis等〕，也有像羊的Visra和Maedi引起的肺炎，水貂阿留申病（Aleutian disease）引起的肾炎等。
建立并研究了一个考虑抗体免疫及免疫损害的慢性病毒感染模型。
A chronic viral infection model with humoral immunity and immune impairment is proposed and studied.
这一突破可以治疗其他慢性病毒感染，如B和C型肝炎，肺结核等细菌感染，他说。
The breakthrough could cure other chronic viral infections, such as hepatitis B and C, and bacterial infections such as tuberculosis, he said.
持久性和慢性病毒感染，一些人类疾病的相关性有明确的主题，会谈将涉及在晚上的会议。
Talks on persistent and chronic viral infections, a topic with clear relevance to a number of human diseases, will be covered in the evening session.
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