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. If the animal's immune system fails to neutralize the virus, it may become severely weakened by it, potentially leading to lethal disease.
How to care for a cat with feline leukemia, All FeLV infected cats should be kept indoors and be neutered. There is presently no cure for FeLV infection.

WebMD explains feline leukemia virus (FeLV), including symptoms, risk factors, treatments, and prevention.Twice-yearly physical examinations, laboratory testing, and parasite control can prevent complications and identify problems quickly.

| Feline leukemia virus (FeLV) is one of the most important infectious diseases of cats worldwide. Affected cats can develop anemia (a low red blood cell level), cancers, and/or suppression of the immune system. The disease worsens over time and is usually fatal.

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.
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