Kitten Vaccination Schedule

The kitten vaccination schedule by age

Kittens follow a series of visits spaced a few weeks apart, usually starting at 6 to 8 weeks old and finishing around 16 to 20 weeks. The core shot is FVRCP, a combination vaccine that covers feline viral rhinotracheitis (feline herpesvirus), calicivirus, and panleukopenia. That first FVRCP dose goes in at 6 to 8 weeks, then repeats every 3 to 4 weeks until the kitten is at least 16 weeks old.

A typical timeline looks like this. At 6 to 8 weeks: first FVRCP. At 10 to 12 weeks: second FVRCP, plus the FeLV series can begin after a blood test. At 12 to 16 weeks: third FVRCP and the rabies shot. At 16 to 20 weeks: a final FVRCP booster to close out the series. Your vet may shift the exact weeks a little based on your kitten's age when you first bring them in.

If you adopted an older kitten who missed the early doses, don't panic. The vet just starts the series from wherever you are and spaces the doses correctly from there. The number of doses matters more than hitting the exact calendar week.

Why a series instead of one shot

Newborn kittens get temporary protection from their mother's milk, called maternal antibodies. Those borrowed antibodies are helpful early on, but they also block a vaccine from working, since the kitten's own immune system doesn't get the chance to respond. The problem is nobody can predict the exact day those maternal antibodies fade in a given kitten.

That's the whole reason for the repeated doses. By giving FVRCP every 3 to 4 weeks through 16 weeks or later, the schedule keeps catching the kitten with a fresh dose right as the maternal antibodies drop off. Skipping the last booster is a real risk, because a kitten vaccinated only at 8 and 12 weeks might still have had maternal antibodies blocking both doses. The shot at 16 weeks or beyond is the one most likely to actually take.

Core vaccines, FeLV, and non-core choices

For cats, the core vaccines that nearly every kitten should get are FVRCP and rabies. Panleukopenia alone, the P in FVRCP, is a brutal disease with a high death rate in kittens, which is why FVRCP isn't optional in most vets' books.

Feline leukemia virus (FeLV) is the third one to know. Most veterinary groups now consider FeLV a core vaccine for all kittens, since young cats are especially susceptible and you can't always predict a cat's future lifestyle. FeLV needs a blood test first to confirm the kitten isn't already infected, then a two-dose series given 3 to 4 weeks apart. After kittenhood, FeLV is often dropped to a non-core booster for strictly indoor adult cats but continued for cats that go outside.

Truly non-core vaccines, like Bordetella or Chlamydia felis, are only recommended in specific situations such as a shelter, cattery, or multi-cat household with a known problem. Your vet will bring these up only if your kitten's environment calls for it.

When do kittens get the rabies shot

Rabies is usually given once, around 12 to 16 weeks of age. Unlike FVRCP, the first rabies shot is a single dose in kittens, not a multi-visit series. It's boosted a year later, then repeated on either a one-year or three-year cycle depending on the specific vaccine your vet uses and your local law.

Rabies is the one vaccine that's often legally required, and the rules vary by state, county, and country. Even for an indoor cat, rabies is worth doing, because a bat getting into the house is a genuine and not-that-rare way an indoor cat gets exposed. Keep the rabies certificate your vet gives you; you'll need it for boarding, travel, and licensing.

How much do kitten vaccinations cost

In the United States, a single core vaccine dose usually runs about $25 to $50, and the office exam fee stacked on top is often another $40 to $70 per visit. Since kittens need several visits, plan for the full first-year vaccine schedule to land somewhere around $150 to $300, and higher in expensive urban areas.

Rabies is typically one of the cheaper shots, often $15 to $30. The FeLV test plus its two-dose series adds roughly $60 to $120 total. You can trim the bill by using a low-cost vaccine clinic, a humane society, or a shelter program, where core shots sometimes cost a fraction of a private clinic's price. Many shelters also send kittens home already started on their vaccine series, so ask for those records to avoid paying for doses your kitten already had.

Side effects, indoor cats, and when your kitten is protected

Most kittens shrug off their shots. The common reactions are mild and short: a little tiredness, a slightly sore spot where the injection went in, reduced appetite for a day, or a low fever. These usually clear within 24 to 48 hours. Serious reactions such as facial swelling, hives, vomiting, or trouble breathing are rare, but if you see them, call your vet right away.

Do indoor cats need vaccines? Yes, at least the core ones. Indoor cats still get exposed through open windows and doors, a new cat joining the household, boarding, escapes, and viruses you can carry in on your hands or shoes. Panleukopenia is tough and can survive in the environment for a long time. FVRCP and rabies are strongly recommended even for a cat that never sets a paw outside; FeLV becomes more of a judgment call for a confirmed indoor-only adult.

One thing to be clear on: your kitten is not fully protected until the whole series is done, roughly a week or two after that final booster at 16 to 20 weeks. Until then, keep an unfinished kitten away from unvaccinated cats and high-risk spots. After the series, adult cats get a booster at 1 year, then continue every 1 to 3 years depending on the vaccine and their lifestyle.

Frequently asked questions