The transmission pathways of tetanus bacteria are quite numerous. Moreover, tetanus is an acute disease. It invades the human body through skin and mucous membrane wounds, generally producing toxins and causing illness. Usually, if the wound is more obvious, or there is a higher chance of wound infection, the reproductive capacity of the bacteria may be stronger, and thus the risk of tetanus infection is higher. Typically, after the onset of tetanus, there are clear symptoms such as fever and chills. If muscle stiffness occurs, the symptoms might be quite severe, requiring immediate medical attention. Additionally, it's helpful to observe whether the patient has speech difficulties, eating troubles, and in severe cases, there may even be convulsions.