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Are 1-year and 3-year dog rabies vaccines the same? Reaction risk?

Updated on September 23rd, 2025

Pet's info: Dog | Chihuahua (Smooth Coat) | Female | spayed | 2 years and 8 months old | 5.5 lbs

Hi! I was wondering if someone could tell me the difference between the 1 and 3 year rabies vaccines for dogs? I understand that one is intended to be given annually, and the other to be given every 3 years, but is my dog more likely to have a reaction to the 3 year? I'd think it would be stronger than the 1 year vaccine, but most of the articles that I've read online say that they are the exact same vaccine. I'm just hoping for a bit of clarification. Thanks!

1 Answer

Most Helpful Answer

Destini R. Holloway, DVM

Answered By Destini R. Holloway, DVM

Veterinarian

Published on July 8th, 2019

Yes of course. There is only 1 Rabies vaccine used in most clinics. However, we can make this 1 vaccine good for 3 years if your pet is over the age of 1 and has already received their adult 1 year booster. But the exact same vaccine is given to every pet, whether they are a young puppy, or an adult dog. The difference is that in a young puppy, the rabies vaccine will only protect them for 1 year due to their still developing immune system, but when they are of adult age, it can last for 3 years.
I hope that this clarifies things for you. Best wishes with your pet Georgia moving forward. Take care! : )
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