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病毒的持续性感染是典型急性感染以外的一种感染形式，在这类感染中，病毒可在机体内持续数月、数年、甚至数十年，可以出现症状，也可以不出现症状而长期携带病毒，成为重要的传染源。持续性病毒惑染的研究已成为病毒分子生物学研究的一个重要方面，了解病毒如何在宿主体内持续存在以及其致病的机理儒要新的视角。目前关于持续性病另感染的许多认识主要基于在过去一个世界中对急性清霉感染研究所积累起来的信息。
A persistent infection with a virus is a form of infection other than a typical acute infection in which the virus can persist for months, years, or even decades in the body, with or without symptoms Carrying the virus, has become an important source of infection. The study of persistent virus infection has become an important aspect of the molecular biology of viruses. It is important to understand how the virus persists in the host and its pathogenesis. Much of the current understanding of persistent STDs is based on the accumulated knowledge of acute STDs in the past world.