A viral illness left her barely able to walk.

一场病毒引起的疾病使她走路十分困难。

My absences were due to a viral illness.

我缺课的原因是因为我传染了病毒。

Recurrent vomiting and lethargy in an infant-just another viral illness?

婴儿反复出现呕吐和昏睡——是另一病毒性疾病？

A: Chikungunya fever is a viral illness that is spread by the bites of infected mosquitoes.

答：基孔肯亚热是一种通过受感染蚊子叮咬传播的病毒性疾病。

It is a viral illness and the most common cause is the Respiratory Syncytial Virus (RSV).

它是一种病毒疾病，最常见的原因是呼吸道合胞病毒。