Why do only some kittens get vaccinated for feline leukemia?

The feline leukemia virus is the leading cause of cancer in cats. The animals contract it through contact with an infected cat. To prevent feline leukemia, new kittens are usually tested for the virus. If they are negative and will be staying inside, away from other cats, there is no reason to vaccinate them. But if they will be spending time outside, a vaccination may help provide protection.

If your cat tests positive for feline leukemia, it can still live a relatively normal life, but will need special care. Infected cats are very susceptible to other diseases, such as upper respiratory infections, so you’ll need to closely monitor the cat’s health. A cat with feline leukemia is also very contagious, so it must be kept away from healthy cats.

– Dr. Larry McDaniel, DVM for the “Purina® Animal Instincts” Podcast Series

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