单纯疱疹性角膜炎可以原发性单纯疱疹病毒感染的形式发生，但其一般常继发于其它疾病或反复发作。

Herpes simplex keratitis can occur in the context of primary herpes simplex virus infection but is observed more frequently in secondary or recurrent disease.

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但该领域的许多研究人员认为与驻留在T细胞这样储存组织中的艾滋病毒相比，艾滋病复发的一个更重要原因是T细胞常处于休眠状态。

But many workers in the field think T-cell dormancy a more significant cause of relapse than HIV in such reservoir tissues.

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