How long does it take to show signs of tetanus after being exposed?

E incubation period: The incubation period varies from 3–21 days, with an average of eight days. The further the injury site is from the central nervous system, the longer the incubation period. The shorter the incubation period, the higher the risk of death.

Usaully about 1 week: Symptoms of disease begin after the bacteria enter a wound and start to produce toxins. Symptoms can start within a few days or take as long as several weeks. Usually it takes about one week.