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Can my unvaccinated cat catch feline leukemia from new kittens?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Shorthair | Male | neutered | 2 years and 7 months old | 12 lbs

How much is the risk for a 2 year cat who hasn’t had the feline leukemia vaccine to interact with 9 week old kittens ? I took the kittens to the vet and they had their fist round of vaccinations but they told me that they could not be sure if they had the leukemia virus útil they reach 6 months of age

3 Answers

Most Helpful Answer

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Answered By Dr. Davis

Veterinarian

Published on September 22nd, 2018

Feline leukemia is spread mostly by fighting and breeding and most mature cats have some natural immunity. There is always a risk if you haven’t had the kittens tested so I would request a Felv/Fiv test and if they are negative then your cat should be safe to play with them. I don’t wait until they are six months to test kittens. Thanks for using Petco Pet Education Center, formerly Petcoach to help you care for Munchie.

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    Answered By Debi Matlack

    Veterinary Technician

    Published on May 14th, 2017

    Vaccination will not cause a cat to be contagious and spread the virus to other cats. The virus is shed in saliva, nasal secretions, urine, feces, and milk of infected cats. Cat-to-cat transfer of the virus may occur from a bite wound, during mutual grooming, and (rarely) through the shared use of litter boxes and feeding dishes. Transmission can also take place from an infected mother cat to her kittens, either before they are born or while they are nursing. FeLV does not survive long outside a cat's body – probably less than a few hours under normal household conditions.

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    Answered By Dr. Strydom, DVM

    Veterinarian

    Published on November 11th, 2019

    The Feline Leukemia virus is shed in saliva, nasal secretions, urine, feces, and milk of infected cats. Cat-to-cat transfer of the virus may occur from a bite wound, during mutual grooming, and (rarely) through the shared use of litter boxes and feeding dishes. Transmission can also take place from an infected mother cat to her kittens, either before they are born or while they are nursing. FeLV does not survive long outside a cat's body so, while it is possible for your cat to get FeLV in the instance you described, it is not likely. Cats at greatest risk of FeLV infection are those that have had prolonged close contact or through bite wounds of other cats.

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