Which wounds are susceptible to tetanus infection

They included frostbite, burns, wounds older than six hours, a second wound contaminated with feces and foreign matter, a third deeper wound, a wound bitten by a poisonous insect, and a fifth open fracture. This wound refers to this wound or includes frostbite and scald. If the treatment time is relatively long, it takes more than 6 hours for the wound. The second wound is the wound after the injury. If the wound is contaminated by feces and foreign matter, that is, the wound is infected. When the wound is injured, local tissues are necrotic, or the environment is relatively dirty. This kind of situation is easy to be infected. The third one is deeper. When the wound is deeper, due to the anaerobic environment, it is said that there are wounds. There are wounds bitten by this kind of animal poisonous insect, and the fifth one is a patient with open fracture. This wound, there are patients. If after trauma, blood pressure drops and circulation disorders occur, what kind of wound is easy to be infected? One is that the bacteria that cause damage invade the human body, that is, local tissue ischemia and hypoxia, and in an anaerobic environment, tetanus is easier to grow and reproduce.