infect

The flu virus can easily infect everyone in an office if no one washes their hands.

(Chinese) 如果没有人洗手，流感病毒可以轻易感染办公室里的每一个人。

Bacteria from the dirty water managed to infect the open wound on his leg.

(Chinese) 污水中的细菌感染了他腿上的开放性伤口。