Kitten Vaccination Schedule 2026: AAHA & AAFP Feline Guidelines (USA)

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)

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.