What are the consequences of nail penetration without tetanus?

When a nail pierces a foot, if it is not injected with tetanus antitoxin, it means that it is very easy to be infected with tetanus. once infected with tetanus, the consequences will be very serious. The nail pierces the foot and forms a very deep, but very narrow, very closed wound. Because the wound is very deep and narrow, the deep wound is oxygen-deficient. As an anaerobic bacteria, tetanus bacteria especially like to breed and grow in this closed anaerobic environment. The wound deeply promotes the anaerobic environment and anaerobic bacteria multiply in this environment, thus causing tetanus infection. once infected, the toxin enters the blood, the consequences will be fatal, and the mortality rate is particularly high.