Is tetanus still useful if it lasts more than 24 hours?

Tetanus vaccination over 24 hours can still play a role, because tetanus infection is mainly caused by tetanus bacillus growing and multiplying in the wound, which then releases a large amount of toxins into the blood circulation, thus causing tetanus infection. The prevention and treatment of tetanus mainly include active immunity and passive immunity. It is advocated to inject tetanus within 24 hours clinically. The main use is tetanus endotoxin to stimulate the body to produce active immunity and produce its own tetanus immunoglobulin, thus neutralizing tetanus toxin. If more than 24 hours do not advocate the use of tetanus toxoid to stimulate the body's active immunity, the use of tetanus immunoglobulin direct injection, so that the body may be infected with tetanus toxin caused by tetanus symptoms, so more than 24 hours after the injection of tetanus immunoglobulin, can prevent tetanus infection.