Vaccines are one of the simplest, most effective ways to protect your cat from serious, sometimes fatal diseases. But the schedule can feel confusing: which shots does every cat need, which depend on lifestyle, and how often do boosters come around? This guide lays it all out in plain language, including a clear by-age table you can bring to your next appointment — based on educational guidance from the American Veterinary Medical Association (AVMA) and the Cornell Feline Health Center.
Core vs non-core vaccines
Veterinary guidelines split feline vaccines into two groups. Understanding the difference helps you have a productive conversation with your vet.
- Core vaccines are recommended for virtually all cats because they protect against diseases that are widespread, severe, or pose a risk to people. For cats these are FVRCP — a single combination shot covering feline viral rhinotracheitis (herpesvirus type 1), calicivirus, and panleukopenia — plus rabies, which is required by law in many areas.
- Non-core vaccines are given based on an individual cat’s risk. The most common is the feline leukemia virus (FeLV) vaccine, strongly recommended for kittens and for any cat that goes outdoors or lives with FeLV-positive cats. Others may be advised in specific situations.
The kitten series
Kittens are born with some protection from their mother’s antibodies, but that immunity fades over the first weeks of life — and it can also block a vaccine from working. That is why the kitten series uses several doses spaced a few weeks apart, rather than a single shot, to ensure protection takes hold as maternal antibodies decline.
- FVRCP usually begins around 6 to 8 weeks, repeated every 3 to 4 weeks until roughly 16 to 20 weeks of age.
- FeLV is recommended for kittens, given as an initial dose with a booster a few weeks later, especially important while a kitten’s lifestyle is still being decided.
- Rabies is typically a single dose around 12 to 16 weeks, with timing and product set by local law.
Adult cats and boosters
Protection from the kitten series is not permanent. Most cats receive a booster about one year after completing the initial series, which sets up longer-lasting immunity. After that, the AVMA and modern feline guidelines support a risk-based approach:
- FVRCP is commonly boosted every 1 to 3 years depending on the product and your cat’s risk.
- Rabies intervals (1 year or 3 years) are dictated by the vaccine used and local law.
- FeLV boosters are typically continued for cats with ongoing exposure risk, such as those allowed outdoors.
An indoor-only cat and an indoor-outdoor cat may end up on quite different schedules — one more reason the indoor-versus-outdoor decision affects more than just behavior. Whatever you choose, your vet will weigh your cat’s lifestyle against the diseases circulating in your area.
Vaccine schedule by age
Use this simplified table as a discussion starter, not a prescription — your veterinarian will personalise it:
- 6–8 weeks: First FVRCP.
- 10–12 weeks: Second FVRCP; first FeLV (risk-based).
- 14–16 weeks: Final kitten FVRCP; rabies; second FeLV.
- ~1 year: FVRCP, rabies, and FeLV boosters.
- Adult (ongoing): Boosters every 1–3 years per vaccine and risk.
Watching your cat after any vaccine is wise. Mild, short-lived soreness or sleepiness is common; if you ever notice the kind of warning signs covered in our guide to spotting a sick cat — facial swelling, repeated vomiting, or breathing trouble — contact your veterinarian promptly. You can also log appointments and reactions in the free tracker.
Frequently Asked Questions
What are the core vaccines for cats?
The core vaccines recommended for virtually all cats protect against feline panleukopenia, feline herpesvirus type 1 (rhinotracheitis), and feline calicivirus, usually combined in one FVRCP shot, plus rabies where required. Core vaccines guard against widespread or severe diseases.
When do kittens start their vaccines?
Kittens typically begin the FVRCP series around 6 to 8 weeks of age, with boosters every 3 to 4 weeks until about 16 to 20 weeks. Rabies is usually given once around 12 to 16 weeks, depending on local law and the vaccine used.
How often do adult cats need boosters?
After the initial series and a booster about a year later, many core vaccines are boosted every 1 to 3 years based on the vaccine, your cat’s lifestyle, and local rules. Your veterinarian tailors the interval to your individual cat.
What is the difference between core and non-core vaccines?
Core vaccines are recommended for all cats because the diseases are common, severe, or pose public-health risk. Non-core vaccines, such as feline leukemia virus, are given based on a cat’s individual risk, like outdoor access or contact with other cats.
Sources
- American Veterinary Medical Association (AVMA) — Vaccinations
- Cornell Feline Health Center — Feline vaccines and health information