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My vaccinated dog exposed to parvo, tested negative. Should I retest?

Updated On September 23rd, 2025

Good afternoon. My 4 years old dog that has all vaccines had a contact 2 days ago with a dog that turn out to have parvovirus. The vets tested my dog today and the test is negative but I am still concerned that the test was performed before symptoms and may not show proper results. Should I test him again in few days?

1 Answer

Most Helpful Answer

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Answered By Catherine Stecyk

Veterinarian

Published on April 19th, 2019

Hello and thank you for reaching out to Petco Pet Education Center, formerly Petcoach. Since your dog is 4 years old and up to date on all of his vaccines, including parvovirus, there is a very low risk of your dog becoming infected with this disease. You are correct that sometimes testing too early can create a "false negative" result, as the virus has a prepatent period in the body before causing clinical signs. I recommend monitoring your dog for the development of any clinical sign such as vomiting, diarrhea, decreased appetite or lethargy. If you see any of these signs, I recommend having your dog re-tested. Otherwise, I think there is a low risk of your dog developing disease. I hope this is helpful!

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