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.
Feline leukemia virus (FeLV) is one of the most common infectious causes of disease of cats globally. Infection with FeLV can cause a variety of clinical signs, impacting a cat's longevity and quality of life.
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. Infection rates are significantly higher (up to 30%) in cats that are ill or otherwise at high risk (see below).

Are you concerned about feline leukemia? It is the most common cause of cancer in cats. Learn about the causes and symptoms of feline leukemia and how to pro...
How Veterinarians Diagnose Feline Leukemia Virus (FeLV). Feline leukemia is usually diagnosed by a test that requires a small amount of blood, called an ELISA test. This test is quick and routinely done in veterinary clinics.

Feline Leukemia Virus: What You Need to Know. Created in Feline, Pet Health, Diseases and Viruses. feline leukemia Feline leukemia (FeLV) is a virus that weakens your cat's immune system.