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How long does the vaccine protection against tetanus last?

The protection provided by the tetanus vaccine typically lasts for around 10 years. It is recommended to get a tetanus booster shot every 10 years to ensure continued protection against the bacteria that causes tetanus. If you were vaccinated for tetanus three years ago, you should still have some level of protection, but it is always a good idea to stay up-to-date with your vaccinations to prevent any potential infections.