Overview
Feline leukaemia virus (FeLV) is a contagious viral infection that targets your cat's immune system, causing a variety of symptoms and putting them at risk of other diseases. It's one of the most common infectious diseases cats are at risk from, and is also an important cause of cancer in cats.
After infection, the virus may progress gradually, with symptoms appearing over months or even years. Vaccination is crucial, as once a cat becomes persistently infected with feline leukaemia, it cannot be cured.
How is feline leukaemia transmitted?
FeLV infection outcomes
What are the symptoms of feline leukaemia?
How is FeLV diagnosed?
What treatment options are available?
Medically reviewed by
Published on 21/02/2019 • Reviewed on 17/12/2024