How deep do you step on nails? You need tetanus.

Tetanus is widely found in nature, and after stepping on nails, because the wound is deep and narrow, it is easy to show tetanus infection. Deep wounds, it is easy to lead to anoxic environment inside the wound, such conditions are more likely to show tetanus infection. Therefore, after stepping on nails, if it shows skin and mucous membrane damage, it is necessary to fight tetanus, which is safer.