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My kitten has FHV. Will future vaccines still help if it's a carrier?

Updated on September 23rd, 2025

If my kitten catches FHV before full course of vaccinations will future vaccinations be effect if they become a carrier.

2 Answers

Most Helpful Answer

Anna M., DVM

Answered By Anna M., DVM

Veterinarian

Published on April 10th, 2019

Hello, and thanks for using PetCoach. This is a great question! Yes, future vaccinations still have benefit, even if a kitten becomes infected with feline herpesvirus and it's "too late" to completely avoid the virus. Giving the vaccine booster can help decrease the flare-ups of symptoms, and decrease viral shedding from the kitten.

Here's a link with more information on the virus and the vaccination, with the key excerpt listed below:
https://vcahospitals.com/know-your-pet/feline-herpesvirus-infection-or-feline-viral-rhinotracheitis
"A cat that is a carrier of FVR may benefit from periodic boosters with the intranasal herpes and calicivirus vaccine (up to 2-3 times per year), which may stimulate local immunity against reactivation of the virus, thus decreasing the likelihood of recurrent infection and of viral shedding."

Hope this helps!
Vote Icon1Pet Parents found this answer helpful

Related Answers from Veterinarians

  • Answered By Jessica Keay, DVM

    Veterinarian

    Published on October 4th, 2017

    I am sorry to hear about Eliza! The herpes vaccination in cats does not offer 100 percent protection but it does decrease the risk and if a cat does contract the virus it decreases the symptoms drastically so it is unlikely for them to be as severely affected as an unvaccinated cat or young kitten with an immature immune system.

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    1Pet Parents found this answer helpful

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