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SESK: Stuff Everyone Should Know · sesk.info/cat-vaccine-booster-12mo

When is a cat's first booster usually given after the kitten vaccine course, per iCatCare?

About 12 months later.

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  1. About 1 week later
  2. About 12 months later ✔
  3. About 5 years later

Why: A booster keeps protection strong after the kitten shots. After that first booster, iCatCare says boosters may only be needed every 1 to 3 years, depending on the vaccine and risk.

Huh, didn't know that: The AVMA says many vaccines protect well when given every few years, while some must be given more often.

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References

Answer: About 12 months later. A booster keeps protection strong after the kitten shots. After that first booster, iCatCare says boosters may only be needed every 1 to 3 years, depending on the vaccine and risk.

  1. iCatCare, Vaccinating your cat icatcare.org/articles/vaccinating-your-cat
    A first booster vaccination should be given 12 months later (this is occasionally given sooner)
    Checked 2026-10-10.

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