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New 8-month-old dog, unknown vaccine history. What shots are needed?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Female | unspayed

We acquired Onyx from an older senile woman. We have no idea what her vaccination record is, although we were told she is up to date, and our vet does not do titer tests. She is approximately 8 months old. We have doubts she was vaccinated properly. Should we do the full round of puppy shots (5way, 6way, 7way, 9way)? A yearly booster? None? I want to make sure she is up to date but I'm also terribly afraid of accidentally over vaccinating.

1 Answer

Most Helpful Answer

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Answered By Jessica Keay, DVM

Veterinarian

Published on December 6th, 2018

Congratulations on your new dog! If the vaccine history is uncertain, I would recommend starting the vaccine series as though she had not had any vaccines, which would involve a rabies vaccine, and then 2 rounds 3 to 4 weeks apart of the DHPP vaccine. Depending on your dog's lifestyle and where you live, I would also consider the leptosporosis vaccine and the bordetella vaccine. Your vet can discuss these options and your lifestyle with you and help you to decide what vaccines to choose.

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