Feline leukemia virus is a retrovirus that infects cats. FeLV can be transmitted from infected cats when the transfer of saliva or nasal secretions is involved.
Neurological Disorders. Feline Vision Problems: A Host of Possible Causes. Feline leukemia virus (FeLV) is one of the most common and important infectious diseases in cats, affecting between 2-3% of all cats in the United States and Canada.

Feline leukemia (or FeLV) is the leading viral killer of cats. It weakens the immune system, increases susceptibility to other diseases, causes blood disorders and is the most common cause of cancer in cats.

Feline leukemia virus is a common disease that affects about 2% of cats in the United States. It is spread cat-to-cat and leads to the destruction of the cats white blood cells and immune system.

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Feline leukemia virus (FeLV) affects cats immune system. Read FAQs about the disease, including transmission, signs, diagnosis, and prognosis.
Feline leukemia virus (FeLV) is an infectious disease of cats that suppresses their immune system, making them susceptible to infections.Symptoms of Feline Leukemia Virus. It's common for cats to show no signs of the disease during the early stages of an FeLV infection.
feline leukemia Feline leukemia (FeLV) is a virus that weakens your cat's immune system. Unfortunately, when the immune system does not function properly, your cat may be more likely to develop other diseases, such as cancer and blood disorders.