In contrast, virus persistence is generally associated with impairment, especially of t cell responses.

相反，病毒持续存在则一般与免疫应答尤其是T细胞应答受损有关。

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So the main feature is that a patient with a chronic evolution of infection has adaptive responses which are functionally impaired and certainly this is very important to allow virus persistence.

所以，主要特征是感染慢性进展的患者其获得性免疫应答在功能上受到损害，这对允许病毒持续存在非常重要。

youdao

So the main feature is that a patient with a chronic evolution of infection have adaptive responses which are functionally impaired and certainly this is very important to allow virus persistence.

所以，主要特征是感染慢性进展的患者其获得性免疫应答在功能上受到损害，这对允许病毒持续存在非常重要。

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