Be how big lockjaw occurrence probability?

破伤风发生的几率有多大？

Bacteria that live in the soil may produce tetanus (lockjaw).

生存于土壤中的细菌可引起破伤风。

Serums contain antibodies that fight off the germs of certain diseases including scarlet fever and lockjaw.

血清含有战胜某些病病菌的抗体，这类疾病包括猩红热和破伤风。

The first signs of this disease include difficulty opening the mouth - often called lockjaw - and difficulty swallowing.

这种疾病的最初症状就是张嘴困难，又叫做牙关紧闭症，以及吞咽困难。

The first signs of this disease include difficulty opening the mouth — often called lockjaw — and difficulty swallowing.

这种病的初期症状包括口难开-通常被称为牙关紧闭-和吞咽困难。