...infectious diseases such as measles.

类似麻疹这样的传染病

These viruses affect children and are highly infectious.

这些病毒会侵袭儿童，而且具有很强的传染性。

She radiates an infectious enthusiasm for everything she does.

她做任何事情都充满一种极富感染力的热情。

There was a peal of laughter down the phone, which Harry found infectious.

电话里传来一阵响亮的笑声,哈里也不禁受其感染。