To determine the need for tetanus depends on the condition of the wound, the items that come into contact with the wound, and so on. 1. Wound condition: open wounds have a small possibility of tetanus infection, generally do not need tetanus vaccination, but if the contamination is serious, later to bandage suture can also be injected. Closed wounds have a high risk of infection, so the vaccine must be administered in a timely manner. 2. Contact with the wound objects: If rust or objects containing obvious putrefactive substances come into contact with the wound, then vaccination is necessary. Tetanus is caused by Clostridium tetani multiplying in a confined environment in the body, so when a wound occurs, it is important to seek medical attention in a timely manner so that the doctor can assess the need for an injection, which should be administered at a regular vaccination site.