Quick Care Checklist
- Have a new cat examined by a veterinarian before starting vaccines or parasite treatment.
- Start the FVRCP series at 8 weeks and follow the booster schedule through at least 16 weeks.
- Give the rabies vaccine at 12-16 weeks according to state law.
- Deworm kittens on your veterinarian's schedule, often every 2 weeks at first, then monthly until 6 months.
- Use products approved for cats, dose by weight, and never use dog products.
- Monitor the cat for 48 hours after vaccination and call the vet for severe reactions.
- Keep indoor cats on a parasite plan too; eggs and fleas can come inside on shoes, clothing, and packages.
Why Vaccines Matter
Core vaccines protect against diseases that are widespread and often deadly. In the US, the core vaccine for cats is FVRCP, which covers:
- Feline panleukopenia, which can be fatal in up to 90% of kittens without treatment.
- Feline herpesvirus, a common cause of upper respiratory infection.
- Feline calicivirus, another major cause of respiratory disease.
Panleukopenia virus survives in the environment for months and can be carried home on shoes and clothing. A strictly indoor cat can still be exposed, so veterinarians recommend vaccines for all cats, not only cats that go outside.
Health Check First, Then Vaccines
Vaccines work best in a healthy cat. A heavy parasite load can weaken the immune system and reduce the vaccine response, so the usual order is:
- Let a new cat settle in for 3-7 days. The New Cat Owner Checklist covers the first-week setup.
- Have a veterinarian check the cat and treat parasites if needed.
- Start the vaccine series once the cat is healthy, usually at 8 weeks or older.
Some clinics give parasite treatment and vaccines at the same visit; others prefer to wait about a week. Follow your veterinarian's schedule.
Kitten vaccine schedule
- 8 weeks: first FVRCP dose.
- 12 weeks: second FVRCP dose, 21-28 days after the first.
- 16 weeks: third FVRCP dose, 21-28 days after the second.
- 12-16 weeks: first rabies vaccine, timed by state law and the vaccine label.
- One year later: FVRCP and rabies boosters, then every 1-3 years depending on state law, risk, and your veterinarian's advice.
Vaccinating before 8 weeks is usually not useful because antibodies from the mother can block the vaccine. If you are unsure whether a kitten has had vaccines, a booster or a restart of the series is safe.
Vaccine note: Schedules are general guidelines. Rabies timing, booster intervals, and legal requirements vary by state, so confirm the plan with your veterinarian.
After vaccination care
- Wait 30 minutes at the clinic so the staff can watch for an allergic reaction.
- Watch the cat for about 48 hours at home.
- Mild sleepiness or a smaller appetite for 1-2 days is normal.
- Keep things calm: no baths, no sudden food changes, and no trips outside unless medically needed.
Severe reactions are rare but need prompt care: facial swelling, hives, repeated vomiting, fever above 103°F (39.5°C), or trouble breathing.
Parasite Prevention
Parasite exposure does not stop at the front door. Fleas, roundworms, and other parasites can be carried in on shoes, grocery bags, or delivered packages.
- Kittens under 6 months: deworm on the veterinarian's schedule, often every 2 weeks at first and then monthly, with monthly flea and heartworm prevention.
- Adult indoor cats: a fecal exam once or twice a year, with deworming only if parasites are found; monthly heartworm prevention is often recommended.
- Cats that go outside: monthly flea, tick, and heartworm prevention year-round.
- Cats fed raw diets: ask your veterinarian. Raw food raises the risk of certain parasites, so more frequent deworming may be advised.
How to give parasite treatments
- For topical spot-ons, part the fur between the shoulder blades and apply to the skin, not the hair. An E-collar can stop the cat from licking it off.
- For oral dewormers, hide the tablet in a small amount of wet food, then watch for 30 minutes to make sure it was not spit out or vomited.
- Avoid bathing a few days before or after applying a topical product, and follow the label.
- Never use dog products on a cat. Dog flea treatments often contain permethrin, which is highly toxic to cats.
- Use products approved for cats and dose strictly by body weight. When in doubt, ask your veterinarian or pharmacist.
Common Mistakes
- Skipping vaccines for an indoor cat.
- Using a dog flea product or a leftover product without checking the label.
- Guessing the dose instead of weighing the cat.
- Bathing the cat right after a topical treatment.
- Deworming an adult cat on a fixed schedule without a diagnosis; ask your vet about a fecal exam first.
When to See a Veterinarian
Call your veterinarian if your cat has a severe vaccine reaction, vomits or has diarrhea for more than a day, stops eating or drinking, loses weight, or has visible fleas, worms, or other parasites. This guide is informational only and is not a substitute for professional veterinary advice.
FAQ
Does an indoor cat really need vaccines?
Yes. Panleukopenia virus can survive for months in the environment and can be carried indoors on shoes and clothing, so indoor cats are still at risk.
Can vaccines and deworming be done on the same day?
Many clinics do both at one visit. If you prefer to space them out, wait about a week; your veterinarian will tell you what works for your cat.
What if an adult cat missed a vaccine?
Catch up as soon as possible. A cat with a complete kitten series usually needs one booster; if the history is unknown, your veterinarian may restart the series.
How often should indoor cats be dewormed?
Many veterinarians recommend a fecal exam once or twice a year and deworming only when parasites are found. Some cats benefit from monthly heartworm prevention, so ask about the risk in your area.
Is it safe to use a dog dewormer on a cat?
No. Some dog products contain ingredients that are toxic to cats, so only use products labeled for cats.
Content note
This guide is for general education. It does not represent a veterinary review or replace advice for your pet's individual situation.
