How often do tetanus shots work?

Tetanus injection mostly refers to tetanus antitoxin or tetanus human immunoglobulin, usually injected as early as possible, mainly used for prevention of tetanus, if more than 24 hours, can be doubled injection, still have a preventive effect.
Tetanus is an acute infectious disease caused by paroxysmal muscle spasms after Clostridium tetani invades the human body through skin or mucous membrane wounds, reproduces in an anoxic environment and will secrete toxins, generally recommended to be injected as early as possible after the injury with tetanus antitoxin or tetanus human immunoglobulin.
Patients with deep and contaminated wounds must be promptly debrided and treated with oral antibiotics if necessary, such as ceftriaxone sodium, levofloxacin, etc., and at the same time injected with tetanus antitoxin or tetanus human immunoglobulin as soon as possible.