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Vaccine FeLV positive cat?

Species: Cat
Breed: long hair
Age: 2-5 years
If my cat tested positive for FeLv should he still get vaccine boosters like fvrcp, aren't those dangerous, are they "alive" or "dead"? Also can i give a cat who has Fiv the FeLv and fvrcp boosters? Actually to be simple: can a cat with a weak immune system receive those boosters? Will those give him the "unwanted" disease? Thank you


Online vet, Dr. Marie

Dr. Marie replied:

We definitely do recommend vaccinating a cat who is positive for feline leukemia. The vaccine will not be harmful to him and will help to protect him from further disease. If he were to come in contact with another virus this could be deadly.

There probably is no benefit in giving feline leukemia vaccine to Gready, but I would give the rest of his vaccines. A while back there was a study that suggested that the Feline Leukemia vaccine would help prevent FeLv positive cats from getting lymphoma but this is not believed to be true anymore.

Ultimately though, I would follow the recommendation of your vet as he or she will know what is best for Gready.

Dr. Marie


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Disclaimer: Although Dr. Marie is a qualified veterinarian, the information found on this site is not meant to replace the advice of your own veterinarian. AskAVetQuestion.com and Dr. Marie do not accept any responsibility for any loss, damage, injury, death, or disease which may arise from reliance on information contained on this site. Do not use information found on this site for diagnosing or treating your pet. Anything you read here is for information only.

Customer reply:

I dont know if Gready has Fiv or not but i want her to get vaccinated especially for FeLv and fvrcp, so my question was: is it dangerous for her to get those vaccines if she may have Fiv..? I know i can make her tested, but lets say i dont, will it be harmful for her to get those vaccines?


Online vet, Dr. Marie

Dr. Marie replied:

Ah, I understand your question now. No, there will be no harm to Gready if she gets any of her vaccines even if she does have FIV. In fact, when we know that a cat is positive for FIV we still will vaccinate them.

Hope that helps!

Dr. Marie.



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Dr. MarieDr. Marie is a veterinarian who practices in a busy animal hospital in Ottawa, Ontario. She created Ask A Vet Question as a resource for good, accurate veterinary advice online. Dr. Marie treats dogs, cats, hamsters, guinea pigs, and rats. She has been a vet since 1999.

Is an online vet visit just as good as a trip to your veterinarian? No! But, many times, asking an online veterinarian a question can help save you money. While Dr. Marie can't officially diagnose your pet or prescribe medications, she can often advise you on whether a vet visit is necessary. You can also ask Dr. Marie for a second opinion on your pet's condition.