Feline Leukemia Virus

Learn about FeLV, a common and important infectious disease in cats that can cause cancer, blood disorders, and immune deficiency. Find out how FeLV is transmitted, diagnosed, and treated, and what are the outcomes of exposure.

Discover how feline leukemia in cats spreads, its symptoms, and how to protect your cat through testing, vaccination, and early care.
8 Early Warning Signs of Feline Leukemia Virus (FeLV)

You can spot the warning signs of feline leukemia virus, also known as FeLV, if you know what to look for. When the disease is detected early enough, you may even be able to take steps to lengthen the life of your cat.
Feline leukemia is also known as cat leukemia , with " leukemia " being spelled as "leukaemia" in some parts of the world. This is a serious and life threatening viral disease, and vaccinating young cats, in particular, is a sensible way of protecting vulnerable animals from infection. What Is Feline Leukemia ?

Feline Leukemia Virus Disease Complex
Learn about FeLV, a virus that infects cats and can cause various diseases, including leukemia , lymphoma, and immune suppression. Find out how FeLV is transmitted, diagnosed, and treated, and what are the risks and outcomes for infected cats.
What is Feline Leukemia Virus (FeLV)? Feline Leukemia Virus is one of the most common infectious diseases in cats, affecting 2-3% of all cats in the U.S. The virus can cause cancer, blood disorders, and immune deficiency, which makes cats more susceptible to other infections. Cats that test positive for FeLV tend to have shorter lifespans, however during the early stages of infection, cats may ...

Feline Leukemia Virus (FeLV) Symptoms, Vaccine, Treatment
WebMD explains feline leukemia virus (FeLV), including symptoms, risk factors, treatments, and prevention.
Feline leukemia virus (FeLV) is a retrovirus that infects cats. FeLV can be transmitted by infected cats via the transfer of saliva or nasal secretions. If the animal's immune system fails to neutralize the virus, it may become severely weakened by it, potentially leading to lethal disease. Because FeLV is cat-to-cat contagious, FeLV+ cats should only live with other FeLV+ cats. FeLV is ...

Feline Leukemia
Feline leukemia virus (FeLV) is a contagious retrovirus that suppresses immunity and causes severe illness. FeLV is spread through saliva, blood, and other secretions, but cannot infect humans or non- feline animals. Preventive measures like testing, vaccination, and avoiding exposure to infected cats help protect against FeLV.





FeLV is a deadly disease that affects cats worldwide and can cause anemia, cancers, and immune system problems. Learn about the transmission, diagnosis, treatment, and prevention of FeLV from this comprehensive veterinary resource.