Complete Kitten Vaccination Schedule (With Timeline)

If you have ever looked at a kitten vaccination schedule and wondered why every shot needs to be given two or three times, a few weeks apart, you are not imagining it. The timing is unusually precise, and getting it wrong can leave your kitten unprotected for weeks at a time.

Here is the schedule veterinarians actually follow, based on the 2020 AAHA/AAFP Feline Vaccination Guidelines, broken down by age, with notes on what each vaccine actually does.

Why kitten shots are spaced out the way they are

Newborn kittens get a starter pack of antibodies from their mother's milk. Those antibodies fade over the first three to four months of life, but they fade at unpredictable rates. While they are still circulating, they can also block a vaccine from working, because the immune system clears the vaccine before it has a chance to teach the body anything.

That is the whole reason kittens get the same vaccines repeated every three to four weeks. Each booster is another shot at catching the kitten in the window where maternal antibodies are low enough to let the vaccine work, but the kitten is not yet exposed to the actual disease.

By 16 weeks, those maternal antibodies are gone in nearly every kitten. That is why the final dose of the kitten series is the one your vet cares most about.

Core vs non-core

The AAFP splits cat vaccines into two groups.

Core vaccines are recommended for every kitten regardless of lifestyle:

• FVRCP: a combination shot covering feline viral rhinotracheitis (herpes), calicivirus, and panleukopenia, often called "feline distemper"
• Rabies: legally required in most US states
• FeLV (feline leukemia virus): as of the 2020 AAFP update, FeLV is now considered core for every kitten under one year, even strictly indoor ones. This is a recent change many owners have not caught up on.

Non-core vaccines depend on where you live and your cat's lifestyle. These include Bordetella, Chlamydia felis, and FIV. Most pet cats do not need them.

6 to 8 weeks: first FVRCP

The first vet visit usually falls between 6 and 8 weeks, often before you bring the kitten home. This is when the first FVRCP is given.

A few things happen at this appointment:

• A general health check and weight
• Fecal test for parasites (kittens often have roundworms or coccidia)
• First deworming dose
• First FVRCP

Rabies and FeLV are not given yet. The kitten is too young, and FeLV requires a negative blood test first, which usually waits until the next visit.

10 to 12 weeks: second FVRCP and first FeLV

At this appointment your kitten gets their second FVRCP, and most vets do an FeLV/FIV combo blood test (called a SNAP test). It only takes about ten minutes in the office.

If the FeLV test is negative, your kitten gets their first FeLV vaccine the same day. If it is positive, that changes the conversation entirely, and your vet will walk you through it.

This is also typically the second deworming.

14 to 16 weeks: final FVRCP, second FeLV, first rabies

This is the big visit. Three vaccines often go in at once:

• Third FVRCP: the most important one, because by now the maternal antibodies are gone and this dose is the one that reliably takes
• Second FeLV: completes the FeLV initial series
• First rabies: most states require rabies by 4 months of age, though the legal age varies

Some vets split these across two visits if your kitten is small or seems stressed. There is no medical penalty for doing that as long as the FVRCP doses stay three to four weeks apart.

12 to 16 months: the one-year boosters

Twelve months after the final kitten visit, your cat comes back for boosters on everything:

• FVRCP booster: locks in long-term immunity. After this booster, most cats do not need FVRCP again for one to three years.
• FeLV booster: only if your cat will continue getting FeLV (more on this below)
• Rabies booster: given as either a 1-year or 3-year vaccine, depending on the product your vet uses and your state's laws

This visit is often the most expensive single appointment of the first year, but it is the one that converts a partially protected kitten into a fully protected adult cat.

The full schedule at a glance

Indoor-only cats: do they still need shots?

Yes for FVRCP and rabies, both of which are core for every cat. Rabies is also a legal requirement in most states regardless of whether your cat ever goes outside.

The vaccine that is reasonable to skip for strictly indoor adult cats is FeLV after the one-year booster. FeLV spreads through prolonged cat-to-cat contact, so a single indoor cat with no feline housemates is at very low risk. Your vet may recommend dropping it after age one, which the AAFP guidelines support.

The other reason indoor cats still need the core vaccines: panleukopenia is extraordinarily hardy. It can ride into your home on shoes, bags, or your hands after petting another cat. Indoor does not mean isolated.

What if you adopted an older kitten or missed a vaccine?

You do not restart from zero. The AAFP catch-up rules are:

• FVRCP: needs at least two doses given three to four weeks apart, with the final dose given after 16 weeks of age. So if you adopted a 6-month-old who got one shot at 8 weeks, they need one more, and they are done.
• Rabies: a single dose protects, with a booster one year later
• FeLV: requires a negative SNAP test, then two doses three to four weeks apart

If you have no records at all from a previous owner or shelter, most vets will start a fresh series rather than risk under-vaccination. The cost of an extra dose is much lower than the cost of treating panleukopenia.

Adult cats: every year or every three?

After the one-year booster, FVRCP frequency depends on risk. The AAFP says every three years is appropriate for most adult indoor cats. Outdoor cats, cats in multi-cat households, and cats that board frequently usually go annually. Your vet will pick based on your cat's situation.

Rabies is set by state law and the specific vaccine used. Some states accept the 3-year vaccine; others require annual rabies regardless of product. This is worth confirming locally rather than guessing.

Keeping track without the spreadsheet

The kitten series spans about ten weeks, three vet visits, and roughly seven individual vaccines, plus dewormings and fecal tests scattered between them. Then there is the 12-month booster, and after that the every-1-to-3-year cycle for the rest of your cat's life. Most owners forget at least one dose along the way.

This is exactly the kind of long, irregular schedule the Pet Care Reminder app was built for. You enter each vaccine once with its next-due date, and the app reminds you when it's time. No spreadsheet, no calendar invite chains, no scrolling back through six months of vet emails to figure out whether the second FeLV happened.

Sources

1. American Association of Feline Practitioners and American Animal Hospital Association. 2020 AAHA/AAFP Feline Vaccination Guidelines.
2. Cornell Feline Health Center. Feline Vaccines: Benefits and Risks.
3. Centers for Disease Control and Prevention. Rabies: Information for Veterinarians.
4. Cornell Feline Health Center. Feline Leukemia Virus.