My cat's previous kittens had leukemia. Is her new kitten infected?

Question

What is the probability that a kitten will have leukemia if 2 of their siblings from another litter have it? Pet's info: Cat | Domestic Shorthair | Female | unspayed | 1 month and 24 days old | 1.11 lbs

Jennifer Summerfield, DVM CPDT-KA · Accepted Answer

It depends on whether the siblings are older or younger. Most of the time, kittens who are leukemia-positive have been born to a leukemia-positive mother. So if kittens from a previous litter tested positive, then it's likely that the mother was positive at that time. Feline leukemia cannot be cured, so if she was positive then, she's likely still positive now - which means any kittens she currently has are likely to be infected as well. You can have a blood test done by your veterinarian to find out for sure.

My cat's previous kittens had leukemia. Is her new kitten infected?

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