感染病毒的英文：
infection

Sows are suffering from virus pneumonia.
母猪感染病毒性肺炎。

The disk has no viruses—I've scanned it already.
这个盘没有感染病毒——我已经扫描过了。

vehicle of infection
传染媒介物

The infection swelled his hand.
感染使他的手肿了起来。

To infect with corruption or decay.
使腐败传染腐化或腐朽

Cholera is a bacterial infection.
霍乱是一种细菌感染。

Coughs and sneezes spread infections.
咳嗽和打喷嚏会传播传染病。