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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.

1 Answer

Most Helpful Answer

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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!

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