Kitten Vaccination Schedule 2026: AAHA & AAFP Feline Guidelines (USA)
Bringing home a kitten in the United States? Vaccination timing across the first 16–20 weeks is one of the most important decisions you will make for a lifetime of health. This guide follows the AAHA/AAFP (American Animal Hospital Association / American Association of Feline Practitioners) Feline Vaccination Guidelines and reflects what most US clinics actually do in 2026.
In the US, kitten core vaccines (FVRCP) start at 6–8 weeks and repeat every 3–4 weeks until at least 16 weeks of age, usually 3–4 rounds, with the dose given at or after 16 weeks being the most important. FeLV (feline leukemia) is recommended as a 2-dose series for all kittens, and rabies is given once around 12–16 weeks and required by law in many states. Expect roughly USD 100–300 for the full kitten series including a FeLV/FIV test; a kitten is not fully protected until 10–14 days after the final dose, so never skip or delay shots without your veterinarian's guidance.
Why the AAHA/AAFP kitten schedule matters
The AAHA/AAFP feline vaccination guidelines are the most widely adopted vaccine reference among US veterinarians. Like puppies, kittens receive a series rather than a single shot because the maternal antibodies that protect a newborn kitten also block vaccine response, and they fade at different rates between weeks 6 and 20. Only a properly spaced series builds reliable immunity — and a kitten is not considered fully protected until 10–14 days after the final dose.
Standard US kitten vaccination schedule (AAHA/AAFP-aligned)
| Age | Core vaccines | Situational / non-core |
|---|---|---|
| 6–8 weeks | FVRCP (Feline herpesvirus-1, Calicivirus, Panleukopenia) #1 | FeLV #1 — recommended for all kittens (test for FeLV first) |
| 10–12 weeks | FVRCP #2 | FeLV #2 |
| 14–16 weeks | FVRCP #3, Rabies (1-year) | — |
| 16–20 weeks | Final FVRCP dose (≥16 weeks — the most critical shot) | Confirm the FeLV series is complete |
| 12 months | FVRCP booster, Rabies (1- or 3-year per state law) | FeLV booster if ongoing exposure risk |
Core vs non-core vaccines for US kittens
Core (recommended for every kitten): FVRCP, Rabies, and FeLV. FVRCP protects against feline herpesvirus-1 (viral rhinotracheitis), calicivirus, and panleukopenia (feline distemper). Rabies is required by law for cats in many US states. FeLV (feline leukemia virus) is considered core for every kitten because young cats are far more susceptible to infection.
Non-core / situational (based on lifestyle): FeLV in strictly indoor adult cats becomes optional after the first year if there is no exposure. Bordetella is used mainly for cats in shelters or catteries, and Chlamydia felis for multi-cat environments with confirmed disease. FIV vaccination is not commonly recommended in the US and can interfere with FIV testing.
Rabies law by state — what to know
Many US states legally require rabies vaccination for cats, and the rules vary by county and city. Some jurisdictions require a 1-year vaccine for the first dose and a 3-year vaccine thereafter. Your veterinarian will know your local law and issue the rabies certificate you need for licensing. Because even indoor cats can be exposed to rabies through bats, rabies vaccination is strongly recommended regardless of local law.
Typical US cost ranges for the kitten series
- Single core vaccine dose: USD 20–50 per visit (varies by region and clinic type)
- Full kitten series (3–4 visits, including a FeLV/FIV test): USD 100–300 at most general practice clinics
- FeLV/FIV test: USD 30–60
- Low-cost vaccine clinics and shelters: as low as USD 10–30 per shot
- Spay/neuter, microchip, and deworming are usually billed separately
Costs are highest in major metros (NYC, San Francisco, Boston) and lowest at community low-cost clinics. Many practices bundle the kitten series into a discounted wellness package that also covers deworming and a FeLV/FIV test.
Common side effects and when to call the vet
Most US kittens tolerate vaccines well. Expect mild soreness at the injection site, brief lethargy, and a possible low-grade fever for up to 24 hours — all normal. Contact your veterinarian or a 24-hour emergency hospital immediately if you see facial swelling, hives, repeated vomiting or diarrhea, difficulty breathing, or collapse within hours of vaccination, as these can signal an allergic (anaphylactic) reaction. A firm lump at an injection site that persists beyond a few weeks should also be checked.
Track every shot with PetCare AI
Log each vaccine in PetCare AI's care calendar and get automatic reminders for the next booster and the critical ≥16-week FVRCP dose. Ask the AI vet assistant lifestyle-specific questions — "Does my indoor-only kitten in Texas still need the FeLV booster after the first year?" — and use the in-app finder to locate a nearby AAHA-accredited clinic or low-cost vaccine event. Always confirm your final schedule with your local DVM, who can adjust timing based on health status and regional disease pressure.
Frequently asked questions
When should I start my kitten's vaccinations in the US?
Start the core FVRCP series at 6–8 weeks of age. If your kitten is already older, your veterinarian will begin the series at the first visit and space the remaining doses accordingly.
How many rounds of kitten shots are needed?
Typically 3–4 rounds of FVRCP given every 3–4 weeks until at least 16 weeks of age, followed by a booster around 12 months. The dose given at or after 16 weeks is the most important for lasting immunity.
Does my kitten need the FeLV (feline leukemia) vaccine?
Yes. The AAHA/AAFP guidelines recommend FeLV as a 2-dose series for every kitten, because young cats are far more susceptible to the virus. Your vet will test for FeLV first. After the first year it can become optional for strictly indoor cats with no exposure.
Is the rabies vaccine required by law for cats in the US?
Many US states legally require rabies vaccination for cats, usually given once between 12 and 16 weeks. Requirements vary by county and city, and rabies is recommended even for indoor cats because of bat exposure. Confirm local rules with your veterinarian.
How much does the kitten vaccine series cost in the US?
A single core dose usually runs USD 20–50, and the full 3–4 visit series including a FeLV/FIV test is about USD 100–300 at a general practice clinic. Low-cost clinics and shelters can charge as little as USD 10–30 per shot.
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