UK kittens start core vaccinations at around eight to nine weeks, with a second dose three to four weeks later, followed by a booster at one year and then every one to three years depending on the vaccine. Even indoor-only cats need vaccinating, since some diseases can be brought in on clothing or shoes, or spread if your cat ever gets outside unexpectedly.
The Kitten Vaccination Timeline
| Age | What Happens |
|---|---|
| 8 to 9 weeks | First dose of core vaccines (FPV, FHV-1, FCV, often FeLV) |
| 12 to 13 weeks | Second dose, completing the primary course |
| 16 weeks (some kittens) | Optional third dose, particularly for high-risk or rescue kittens |
| 1 year | First annual booster |
| Every 1 to 3 years after | Ongoing boosters, timing depends on the specific vaccine and your cat’s lifestyle |
What the Core Vaccines Protect Against
- Feline panleukopenia (FPV) — also called feline distemper, causes severe vomiting and diarrhoea and is often fatal without prompt treatment
- Feline herpesvirus (FHV-1) and feline calicivirus (FCV) — together the main causes of cat flu, leading to sneezing, eye discharge and mouth ulcers
- Feline leukaemia virus (FeLV) — often treated as core for kittens in the UK, since it suppresses the immune system and can lead to serious illness later in life, even if a kitten’s future lifestyle isn’t yet fixed
Rabies is not part of the standard UK schedule and is only needed for cats travelling abroad under a pet passport or Animal Health Certificate.
Do Indoor Cats Really Need Vaccinating?
Yes, in almost all cases. Viruses like panleukopenia can be carried indoors on shoes or clothing, and even the most dedicated indoor cat can escape unexpectedly or need emergency boarding. FeLV is more relevant for cats with outdoor access, so your vet may adjust this specific vaccine for a genuinely indoor-only adult cat, but core protection is still generally recommended.
Booster Frequency Explained
Not every vaccine needs boosting at the same interval. Cat flu (FHV-1 and FCV) and panleukopenia boosters are typically given every one to three years, depending on the specific vaccine brand and your cat’s risk level, while FeLV is often given annually for younger or outdoor cats due to a higher exposure risk. Your vet will set the right schedule for your individual cat rather than a single blanket rule.
What to Expect at the Appointment
Your vet will usually carry out a full health check alongside each vaccination, checking weight, teeth, heart and general condition. This makes vaccination visits a useful early-warning opportunity for issues unrelated to the vaccine itself. Mild tiredness or slight soreness at the injection site for a day or so is normal; contact your vet if you notice swelling, vomiting or lethargy lasting more than 24 hours.
Getting a Rescue or Older Cat’s Vaccination History Right
If you’ve adopted a cat with an unclear vaccination history, most vets recommend starting a fresh primary course rather than assuming previous protection still applies. This is a sensible, low-risk approach when records are missing or unclear. If you’re bringing a rescue cat into a home with an existing cat, our guide to introducing a kitten to a cat is a useful next read, alongside a wider cat health care guide for general wellbeing checks.
Frequently Asked Questions
Do indoor-only cats need vaccinations?
Generally yes, since some viruses can be brought indoors on clothing or shoes, though your vet may adjust specific non-core vaccines like FeLV based on your cat’s genuine lifestyle risk.
How much does cat vaccination cost in the UK?
A kitten primary course typically costs in the region of £60 to £100, with adult boosters usually somewhat less, though prices vary by practice and location.
Can I get my cat vaccinated if I don’t know their history?
Yes. Most vets will simply start a fresh primary course when vaccination history is unknown or unclear, which is a safe and standard approach.
Is rabies vaccination needed for cats in the UK?
Not for domestic life in the UK. It is only required if you plan to travel abroad with your cat under a pet passport or Animal Health Certificate scheme.
Key Takeaways
- Kittens need two core vaccine doses, typically at 8 to 9 weeks and 12 to 13 weeks
- Indoor cats still generally need core vaccination, since exposure risk isn’t always zero
- Booster intervals vary by vaccine, from annual to every three years
- Rescue cats with unclear history usually restart a fresh primary course
About the Author: This guide was written by the K9 Assistance editorial team, who research UK-based pet care topics to help owners make confident, informed decisions.