Yes, there are several 3-year rabies vaccines approved for cats in the United States. These vaccines provide the same core protection as 1-year versions but are licensed by the USDA for a longer duration of immunity, meaning your cat needs fewer shots over its lifetime. Multiple brands and formulations are available, including both traditional and newer recombinant options.
Available 3-Year Vaccines for Cats
Six USDA-approved rabies vaccines are currently licensed for 3-year use in cats:
- IMRAB 3 (Boehringer Ingelheim): a killed, adjuvanted vaccine for dogs, cats, and ferrets
- IMRAB 3 TF (Boehringer Ingelheim): the same vaccine in a thimerosal-free formulation
- PUREVAX 3 (Boehringer Ingelheim): a recombinant, non-adjuvanted vaccine made exclusively for cats
- NOBIVAC 3 (Merck): a killed, adjuvanted vaccine for dogs and cats
- RABVAC 3 (Elanco): a killed, adjuvanted vaccine for dogs and cats
- VANGUARD Rabies 3 (Zoetis): a killed, adjuvanted vaccine for dogs and cats
Most of these are traditional killed-virus vaccines that contain adjuvants, which are ingredients added to boost the immune response. PUREVAX 3 is the only non-adjuvanted, cat-specific option on the list, and it uses a different technology (recombinant rather than killed virus) to achieve 3-year protection.
The Schedule for Kittens and Adults
Regardless of which 3-year product your vet uses, the initial schedule is the same. Kittens receive their first rabies shot between 12 and 16 weeks of age. A booster is given one year later. After that second dose, subsequent boosters are spaced every 3 years for the rest of the cat’s life.
Adult cats with no vaccination history, such as rescues or strays, get a single dose followed by a booster one year later, then move to the 3-year schedule. If your cat’s vaccination has lapsed, a booster with a 3-year product restores the full 3-year duration of immunity. Your vet should note the specific product and its labeled duration on the rabies certificate.
Adjuvanted vs. Non-Adjuvanted: Why It Matters
Cats have a well-documented, though rare, risk of developing injection-site sarcomas, which are aggressive tumors that can form at the location where a vaccine was given. Because of this risk, there has been long-running debate about whether adjuvanted vaccines (which make up most of the 3-year options) carry a higher tumor risk than non-adjuvanted ones.
The evidence is still mixed. Some veterinary experts recommend non-adjuvanted vaccines as a precaution when they offer equal protection, while others point out that the data isn’t strong enough to make a definitive recommendation either way. What is widely agreed upon is that vaccinating less frequently reduces cumulative risk. A 3-year vaccine means fewer injections over a cat’s lifetime compared to annual shots, and current veterinary guidelines from UC Davis explicitly recommend using a vaccine approved for 3-year administration.
If avoiding adjuvants is important to you, PUREVAX 3 is the only non-adjuvanted option with a 3-year label for cats. It tends to cost more, and not every clinic stocks it.
Cost Differences
Three-year rabies vaccines generally cost more per dose than 1-year versions, and non-adjuvanted products cost more than adjuvanted ones. The exact price varies depending on your veterinary clinic. A full office visit will run more than a community vaccine clinic. Some practices absorb the added cost of non-adjuvanted vaccines because they consider them the better choice for cats, while high-volume clinics may pass the cost along to you.
Even though the per-dose price is higher, a 3-year vaccine saves money over time because you’re paying for one shot every three years instead of one every year. Fewer vet visits also means less stress for cats who don’t travel well.
State Laws and Local Rules
Rabies vaccination for cats is legally required in most U.S. states, but the specifics vary by jurisdiction. Some states and counties recognize the full 3-year duration printed on the vaccine label. New Mexico’s animal control regulations, for example, explicitly allow revaccination within 36 months when a 3-year product is used. Other states or municipalities may require annual vaccination regardless of the product’s labeled duration.
Your vet should know what your local law requires. The rabies certificate they issue will list the vaccine used, the date given, and the expiration date. That certificate is what you’ll need for pet licensing, boarding, and travel.
Medical Exemptions
In rare cases, a cat may be too sick to safely receive a rabies vaccine. The American Veterinary Medical Association recognizes that waivers may be appropriate when vaccination would endanger the animal’s life, but the bar is high. A waiver must be based on documented clinical evidence of a serious, life-threatening risk from the vaccine itself. Old age alone, or a general preference to minimize vaccinations, does not qualify. Whether your jurisdiction accepts a medical exemption depends on local law, and not all states have waiver provisions.