Patients are prone to tetanus infection in the following cases: First, tetanus infection belongs to anaerobic bacteria infection, only when the wound is deeper may be infected with tetanus, if it is only a superficial surface abrasion, there is no reproductive conditions for Clostridium tetani, this situation will not be infected with tetanus. rusty knives, soil and other substances, there will also be tetanus clostridium, so patients may be infected with tetanus clostridium if they are wounded by rusty iron or the wound is dirty and there is already contact with soil. Tetanus is a very dangerous disease, the mortality rate after the disease is relatively high, and the treatment is more difficult, so patients who are at risk of tetanus should be promptly injected with tetanus shots for prevention to prevent the risk of occurrence.