Check How Often Adults Need a Tetanus Booster
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Key Takeaway
The KDCA advises that after the Tdap booster at ages 11 to 12, adults also get a Td or Tdap booster every 10 years. If you have no record, the schedule differs, so check your own vaccination history first.

How does the KDCA describe the adult tetanus booster interval?
The diphtheria guide in the KDCA's Vaccination Helper lists Tdap and Td as the vaccines used for adolescents and adults. The part of the booster table on the same page that applies to adults is below.
| Dose | Standard timing | Minimum interval | Vaccine |
|---|---|---|---|
| 6th | Ages 11 to 12 | Not indicated | Tdap |
| 7th | Every 10 years | 5 years | Tdap or Td |
The guide on the KDCA website to infectious diseases covered by vaccination says the same. It states that after finishing the DTaP series in infancy and early childhood and getting a Tdap booster at ages 11 to 12, you get a booster with the Td or Tdap vaccine every 10 years after that. This guidance gives the same content in its tetanus entry and in its diphtheria and pertussis entry.
What does the 5-year minimum interval in the table mean?
The 7th dose row shows a minimum interval of "5 years" separately from the standard timing of "every 10 years." The Vaccination Helper page doesn't explain in its text how these two values differ. So this material gives no basis for reading it as saying you can be vaccinated because 5 years have passed. If you know the date of your last shot and are thinking about getting vaccinated before 10 years, ask a medical institution and tell them your reason.
Does the schedule change if you have no record?
Both pages give a schedule for people with no past vaccination history, and the wording differs.
| Source | Guidance if there is no vaccination history |
|---|---|
| Vaccination Helper (for people never vaccinated before age 7) | 3 doses at 0, 1, and 6 months. At least one is Tdap, and it recommends the first be Tdap where possible |
| KDCA guide to infectious diseases covered by vaccination | Doses 1 and 2 at least 4 weeks apart, and dose 3 at least 6 to 12 months after dose 2. One of the 3 doses is Tdap. The schedule may differ by age and vaccination history |
Both guides share the 3-dose structure and the inclusion of one Tdap dose. Which interval applies can vary with your vaccination history and age, so this post doesn't decide that. If only some of your records remain, take what you have to the vaccination institution and ask.
Where do you check your vaccination records?
The Vaccination Helper says it offers a vaccination record lookup and a tool to find designated medical institutions. Here is an example order for checking.
- Look up your vaccination history on the Vaccination Helper.
- See whether there is a record of the Tdap shot at ages 11 to 12 or a later Td or Tdap shot.
- Note the year of your last shot and tell the medical institution when you visit.
If you have a paper vaccination booklet or earlier clinic records, bring those too. It makes confirming your history much easier.
What can't be confirmed from these materials?
Neither source says whether adult Td or Tdap shots are covered by the government, or what you pay out of pocket. They also don't cover vaccination during pregnancy, deciding on a shot after a wound, or schedules in special situations such as weakened immunity. Ask the medical institution where you plan to be vaccinated about cost. If any of the situations above applies to you, follow the guidance on when to contact a medical institution below.
When should you contact a medical institution?
Contact a medical institution or public health center if you don't know when your last shot was or have no vaccination history, if you are pregnant or discussing your immune status with a doctor, or if you've been wounded and are worried about whether you need a shot. Your doctor decides the interval and vaccine type based on your personal condition. The tables in this post are general guidance and do not set an individual vaccination schedule for you.
Frequently Asked Questions
How many years apart should adults get a tetanus booster?
The adult schedule in the KDCA's Vaccination Helper lists a Tdap or Td shot every 10 years as the step after the Tdap shot at ages 11 to 12. The KDCA's guide to infectious diseases covered by vaccination also says to get a booster every 10 years after that.
Can I get a shot if it has been less than 10 years since my last one?
The Vaccination Helper table lists a minimum interval of 5 years next to the standard timing of "every 10 years." The page doesn't separately explain when that 5 years applies, so this post alone can't tell you whether you can. Take your vaccination history to a medical institution and ask.
How do I check if I don't know my childhood vaccination records?
The Vaccination Helper says it offers a vaccination record lookup. If the lookup doesn't show your records, tell a medical institution your history is unclear and discuss the schedule.
Sources & Verification Date
- Diphtheria (KDCA Vaccination Helper, last reviewed 2025-01-20) · Verified
- Infectious Diseases Covered by Vaccination (KDCA, last reviewed 2026-09-29) · Verified
All materials have been verified from official announcements and may have changed since verification.