If the wound is a little shallow, tetanus shot is usually not needed.
A small shallow wound is an aerobic environment, and there is no reproduction of tetanus bacillus in an aerobic environment. Tetanus bacillus lives in an anaerobic environment, and it may reproduce in deeper wounds in an anaerobic environment.
Tetanus bacillus lives in an anaerobic environment and may be infected with tetanus bacillus in deeper wounds, which may cause tetanus, so a little shallow wound does not need tetanus prophylaxis.
If there is a little deeper wound, there is a possibility of tetanus and tetanus vaccination is needed.
Patients with small wounds should consult a physician to decide whether or not to take tetanus prophylaxis, and also to treat the wound to avoid adverse outcomes.