Cat Vaccination Schedule: Core Vaccines, Boosters and Kitten Series
Vaccines are among the most effective tools in veterinary medicine. They protect cats from serious diseases, some of which are fatal, and some of which can spread to people. Understanding which vaccines your cat needs, and when, makes visits to the vet easier and helps you plan.
Core versus non-core vaccines
Veterinary organizations classify vaccines as core, recommended for all cats, and non-core, recommended based on risk.
Core vaccines
- FVRCP. A combination vaccine that protects against feline viral rhinotracheitis, caused by herpesvirus, feline calicivirus and feline panleukopenia, a severe, often fatal virus in kittens.
- Rabies. Protects against a fatal disease that can infect people. Vaccination is legally required for cats in many US states and municipalities.
Non-core vaccines
- Feline leukemia virus, FeLV. Recommended for all kittens, and for adult cats with outdoor access or exposure to other cats.
- Others, such as for Chlamydia felis or Bordetella, are used in specific situations such as shelters and boarding.
Your vet decides based on your cat's age, lifestyle, health and local risk.
A typical kitten schedule
Timing varies, but a common pattern is:
| Age | Vaccines |
|---|---|
| 6 to 8 weeks | First FVRCP |
| 9 to 12 weeks | Second FVRCP, and FeLV first dose in many clinics |
| 12 to 16 weeks | Third FVRCP, rabies, and second FeLV dose |
| 16 weeks | Final FVRCP in the series if needed |
| 1 year | FVRCP, rabies and FeLV boosters |
The repeated doses are needed because antibodies from the mother's milk can block the vaccine in young kittens. The series ensures protection once those antibodies fade. A kitten is not fully protected until the series is complete, so limit contact with unknown cats until then. See our kitten care guides and the kitten feeding schedule.
Adult cats
After the first-year booster, many cats receive FVRCP every three years, in line with guidelines, and rabies according to the vaccine type and local law, which may be annually or every three years. Cats with a low risk may need fewer shots, and cats with a higher risk may need more. Vets also do a physical exam at each visit, which is as valuable as the vaccine. Adult cats with unknown history should start with two doses of core vaccine, three to four weeks apart.
Rabies and the law
Rabies vaccination is legally required for cats in many areas, and proof may be needed for licensing, boarding and travel. If your cat bites someone, the vaccination record can affect the quarantine period. Keep records safe, and carry them when you travel. See how to travel with a cat by car.
Feline leukemia virus
FeLV spreads through close contact, such as grooming and shared bowls, and from mother to kittens. It can cause anemia, cancer and immune suppression. All kittens should be tested and vaccinated if they test negative, and adult cats that go outdoors or live with cats of unknown status may need boosters. Testing before vaccination is important.
Side effects
Most cats have no problem. Mild signs include:
- Sleepiness or low appetite for a day
- Mild soreness or a small lump at the injection site
- A mild fever
Seek urgent care for:
- Facial swelling, hives or itching
- Vomiting or diarrhea
- Difficulty breathing
- Collapse or weakness
- A lump at the injection site that grows or persists beyond a few weeks
See the emergency warning signs guide. Injection-site sarcomas are rare but serious, and your vet may choose sites on the limbs to help monitor them.
Costs and where to go
Vaccines are often part of a wellness visit. Low-cost clinics, shelters and municipal programs may offer discounted vaccines. See cat vet visit costs for typical ranges, and use the US vet directory to find a clinic.
Keeping records
Ask for a vaccine certificate and keep a copy on your phone. Note dates for boosters and set reminders. If you adopt an adult cat, ask for any records from the shelter or previous owner.
Common myths about cat vaccines
"Indoor cats do not need shots." Viruses such as panleukopenia can be carried on shoes and clothing, indoor cats can escape, and rabies law applies to all cats in many places.
"More frequent is safer." Over-vaccination offers no extra benefit, and guidelines favor the longest safe intervals for core vaccines.
"Vaccines are only for kittens." Adults need boosters on schedule, and an adopted adult with an unknown history should be vaccinated.
Vaccines and senior or sick cats
Vets weigh the benefits and risks for older cats and those with chronic illness. Some may need fewer vaccines, and a few may be exempt for medical reasons, which the vet can document. Always tell the clinic about illness, medications and past reactions before any shot.
Questions to ask your vet
- Which vaccines does my cat need based on lifestyle?
- How often should rabies and FVRCP boosters be given?
- Should I test for FeLV and FIV?
- What signs of a reaction should I watch for?
- Can we schedule vaccines with other care, such as a spay or neuter?
Frequently asked questions
What vaccines does a kitten need?
FVRCP in a series, rabies at about twelve to sixteen weeks, and FeLV for kittens, with your vet advising on others.
Do indoor cats need vaccines?
Yes. Core vaccines are recommended for indoor cats, since viruses can enter on shoes and clothing, and rabies vaccination is often required by law.
How often do adult cats need boosters?
Many core vaccines are given every three years after the first booster, though rabies may be annual or every three years depending on the vaccine and local law.
Are there side effects?
Mild lethargy or soreness for a day or two is common. Facial swelling, hives, vomiting or collapse need urgent care.
Sources and further reading
Health information changes as research does. These organizations publish guidance worth reading alongside our articles.
- CDC Healthy Pets, Healthy PeoplePublic-health advice on pets, zoonotic disease and safe handling.
- American Animal Hospital AssociationAccreditation body and practice guidelines for companion-animal hospitals.
- WSAVA Global GuidelinesGlobal vaccination, nutrition and pain guidelines for small-animal vets.
Tailwisp is independent and written under our editorial policy. Learn who we are, or browse all cat guides.
This article is general educational information, not veterinary advice. Every cat is different. If your cat is unwell, or you are unsure about a symptom, diet change or medication, contact your veterinarian.