Kitten Vaccine Schedule: Core Shots, Boosters and Rabies Explained
Kittens are born with some protection from their mother's milk, but it fades just as their own immune system is still learning. Vaccines fill the gap. Understanding the schedule helps you keep appointments, and protects your kitten from diseases that can be deadly.
Why a series, not one shot
Antibodies from the mother's milk protect kittens early in life, but they also interfere with vaccines, and wear off at different times in each kitten. A shot given too early may be neutralized, and a shot given too late may leave a gap. Giving boosters every three to four weeks until sixteen weeks or older ensures that at least one dose works when the kitten's own immune system can respond. See cat vaccination schedule.
Core vaccines
FVRCP. A combination shot protecting against:
- Feline viral rhinotracheitis (herpesvirus), which causes sneezing, eye discharge and ulcers.
- Calicivirus, causing mouth ulcers and respiratory disease.
- Panleukopenia (feline distemper), a deadly virus that destroys white blood cells and the gut lining. See feline panleukopenia and feline calicivirus and herpesvirus.
Rabies. Required by law in many places, and given once at about twelve to sixteen weeks, then boosted. Rabies is fatal, and can pass to people. See rabies and cats.
Non-core vaccines
- Feline leukemia virus (FeLV). Recommended for all kittens, since they are most vulnerable, and risk depends on later exposure. Kittens are tested for FeLV and FIV before vaccination. See felv and fiv in cats.
- Bordetella and Chlamydia. Considered for cats in shelters, catteries or multi-cat settings.
- FIV. Not widely used, and it can interfere with testing.
Ask your vet which vaccines suit your kitten's lifestyle.
A typical timeline
- 6 to 8 weeks: first FVRCP. Exam, deworming, fecal test.
- 9 to 12 weeks: second FVRCP. FeLV test and first FeLV vaccine, if recommended.
- 12 to 16 weeks: third FVRCP, second FeLV, rabies.
- 16 weeks or later: final FVRCP booster, in some protocols.
- One year: boosters for FVRCP, rabies and FeLV, as indicated.
- Adult: FVRCP every three years, rabies per local law, FeLV by risk.
Your vet will tailor this. If you adopt a kitten partway through the series, bring records. See kitten first vet visit.
When is my kitten protected?
Protection builds after the final booster, usually within a week or two. Until then, keep the kitten indoors, and away from unvaccinated animals and unknown cats. Avoid shelters, boarding facilities and pet stores without discussing it with your vet.
Preparing for the visit
Bring records, a stool sample and questions. Keep the kitten in a carrier. Feed normally, and bring a favorite treat. See how to choose a cat carrier.
Side effects
Many kittens are sleepy, off their food or slightly sore for a day. A small lump may appear at the injection site and fade in a few weeks. See cat vaccine reactions.
Call your vet right away if you see:
- Facial swelling, hives or itching.
- Repeated vomiting or diarrhea.
- Difficulty breathing.
- Collapse or weakness.
- A lump that grows, lasts over three months or keeps getting larger. See injection site sarcoma in cats.
Vaccine reactions are rare, and the risk of disease is far higher.
Tips for easier vet visits
- Stay calm, and use pheromone spray on the carrier.
- Schedule shots when the kitten is healthy.
- Ask for the same vet each time.
- Praise and reward after each visit. See helping a cat who hates the vet.
Costs
A full series may cost about $75 to $200, depending on location and clinic. Low-cost clinics and shelters offer discounts. See kitten cost first year and low cost vet care for cats.
Other preventive care
Vaccines are one part of kitten care. Ask about deworming, flea control and microchipping. See kitten deworming guide and fleas on cats.
Orphans and strays
Kittens without a mother may need earlier or different protocols. See how to bottle feed a kitten and what to do if you find a stray kitten.
Common questions
What if I miss a booster? Call your vet, who may restart or extend the series. Do not wait until the next year. Can a sick kitten be vaccinated? Usually not until recovered, since illness reduces the response. Do vaccines last forever? No. Immunity from kitten shots fades, which is why the one-year booster matters. Keep a vaccine record in your phone and in a folder, and bring it to every visit, boarding stay or grooming appointment. Many facilities require proof of vaccination.
What about titers? A blood test can measure antibody levels for some diseases. Ask your vet whether it suits your cat.
When to see a vet
Book the first vaccine visit as soon as you adopt. Use the US vet directory to find a clinic.
Frequently asked questions
When do kittens get their first shots?
Usually around six to eight weeks old.
How many shots do kittens need?
A series, often three or four visits, until sixteen weeks or older.
When is a kitten fully protected?
Typically a week or two after the final kitten booster, as your vet confirms.
Are indoor kittens vaccinated too?
Yes. Some diseases spread through shoes and clothes, and rabies is required by law in many places.
Sources and further reading
We link to recognised organizations so you can check the basics for yourself. We have no commercial relationship with any site listed here.
- Cat Friendly Homes (AAFP and ISFM)Cat-specific care guidance and a finder for cat-friendly practices.
- ASPCA cat careEveryday care, behavior and safety basics for cats.
- American Veterinary Medical Association: pet owner resourcesPolicy-level guidance from the national veterinary association.
Tailwisp is independent and written under our editorial policy. Learn who we are, or browse all cat guides.