Tetanus is needed when the wound is deeper, which generally means that the skin is split open all the way through.
Tetanus shot means tetanus antitoxin or tetanus human immunoglobulin, which may otherwise lead to tetanus bacillus infection.
Tetanus bacillus can survive in anaerobic conditions. After an injury, tetanus bacillus enters the body through the injury site, which can lead to local ischemia and hypoxia if the wound is deep and narrow. If the wound is deep and narrow, it will lead to ischemia and hypoxia. In addition, foreign objects left in the body can also lead to a decrease in the local oxygen content, and all these conditions are conducive to the growth of tetanus bacillus, which can easily induce tetanus.
Therefore, it is generally recommended to inject tetanus antitoxin or human tetanus immunoglobulin intramuscularly within 24 hours after the injury when a foreign body is stabbed or when a deep and narrow wound occurs, which can reduce the risk of infection with tetanus bacillus.
Injuries should be treated promptly in a hospital, and the doctor will take appropriate measures according to the condition of the wound.