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Is it safe to vaccinate a cat for feline leukemia if they have FeLV?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female

Hi what effect will it have on my cat if they receive a feline leukemia vaccination and they already have leukemia

1 Answer

Most Helpful Answer

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Answered By Linda G, MS, DVM

Veterinarian

Published on March 11th, 2019

Hello. If your kitty, Poppy, is Feline Leukemia positive, receiving the vaccination will not cause any problems at all. She will be fine, or at least not have any effects from the vaccine. Thanks for using Petco Pet Education Center, formerly Petcoach.

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