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Is it medically necessary to get a tetanus shot?

My doctor recommended a tetanus shot because I haven't had one in a while. Do I really need one? I thought you only needed one if you cut yourself on something dirty...
Tetanus is a rare but very dangerous infection caused by a bacteria that lives in the dirt. The mortality rate from a case of tetanus is very high; for these reasons, everyone should be vaccinated against the infection. The tetanus vaccine only lasts about 8-10 years, so it is necessary to have a repeat vaccination at least that often. You shouldn't wait until you have cut yourself with something dirty to get the vaccine, because the vaccine works better if it is done before a potential exposure to tetanus rather than in the moment of the injury. Furthermore, there might be another reason to have a tetanus booster now. There is a form of the tetanus booster that contains a pertussis booster vaccine as well. This is called Tdap. All adults who have not had a pertussis booster should have one, since immunity to pertussis wanes over time and the incidence of pertussis in adults is on the rise. Therefore, this might be an opportunity for you to get the pertussis booster as well as the tetanus booster in a single shot. Talk to your primary care doctor about this again; they can set you up with another visit to get your shot.
This answer is for general informational purposes only and is not a substitute for professional medical advice.
If you think you may have a medical emergency, call your doctor or (in the United States) 911 immediately. Always seek the advice of your doctor before starting or changing treatment. Medical professionals who provide responses to health-related questions are intended third party beneficiaries with certain rights under Zocdoc’s Terms of Service.

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