Cat Vaccination Schedule: Which Shots Your Cat Needs and When

Vaccinations are one of the most straightforward and effective things you can do to protect your cat’s health. But with core vaccines, non-core vaccines, boosters, and varying schedules, it can feel confusing. Here’s a clear breakdown of what your cat needs and when.

Core Vaccines: Essential for All Cats

Core vaccines protect against diseases that are widespread, serious, or transmissible to humans. Every cat regardless of lifestyle should receive these. The FVRCP combination vaccine protects against Feline Viral Rhinotracheitis (herpesvirus), Calicivirus, and Panleukopenia (feline distemper). Rabies vaccination is legally required in many regions and protects against a fatal disease.

Kitten Vaccination Schedule

Kittens receive a series of vaccinations because their maternal antibodies interfere with vaccine response and fade at different times. The typical schedule starts at 6–8 weeks with FVRCP, repeated every 3–4 weeks until 16 weeks. Rabies is usually given at 12–16 weeks. FeLV (feline leukemia) is recommended for kittens with any outdoor exposure. Your vet will tailor this to your kitten’s situation.

Adult Cat Boosters

After the initial kitten series, cats receive a booster at one year. After that, FVRCP is typically given every 3 years for adult cats. Rabies boosters depend on the specific vaccine used and local regulations — your vet will advise. Lifestyle vaccines like FeLV are assessed annually based on risk.

Non-Core (Lifestyle) Vaccines

These are recommended based on your cat’s individual risk factors. Feline Leukemia Virus (FeLV) vaccination is recommended for outdoor cats or cats with exposure to other cats of unknown status. Feline Immunodeficiency Virus (FIV) vaccine is less commonly used. Bordetella and Chlamydia vaccines exist but are only recommended in specific circumstances.

Indoor vs. Outdoor Cats

Even strictly indoor cats need core vaccinations — they can be exposed to viruses tracked in on shoes and clothing, and escapes (intentional or accidental) happen. Outdoor or indoor-outdoor cats need more comprehensive protection including FeLV and potentially others. Discuss your cat’s lifestyle honestly with your vet for a tailored plan.

Possible Reactions to Vaccines

Mild reactions are common and temporary: lethargy, mild fever, and soreness at the injection site for 24–48 hours. Rarely, cats can develop more significant reactions — facial swelling, vomiting, or breathing difficulty within minutes to an hour of vaccination. Stay at the clinic for 15–20 minutes post-vaccination, and call immediately if you notice any severe reaction at home.

When to See a Vet

If your cat’s vaccination history is unknown (common with rescues), your vet will either restart the series or perform a titre test (blood test measuring existing antibody levels). Keep a vaccination record and bring it to every vet visit. Never skip boosters — protection wanes without them.

Vaccinations represent a tiny investment of time and money in exchange for years of protection against serious, preventable diseases. Staying on schedule is one of the simplest and most impactful things you can do as a cat owner.