If your veterinarian Portland, OR has diagnosed your Maine Coon Cat with FeLV then you should talk to him about treatment plans, medications, and management. FeLV is also known as the Feline Leukemia Virus. It is a virus that can cause anemia, lymphoma, and a suppressed immune system in cats. The virus is not contagious to other animals or people. There is no cure for FeLV and most treatment options are for the purpose of prolonging your cat’s quality of life. If your cat tests positive for FeLV at an early stage and is healthy then he could possibly resist the virus or clear it on his own. However, younger cats and older cats tend to be unable to fight the virus on their own. Treatment can be given to keep your cat comfortable and to prevent secondary infections caused by a compromised immune system. Talk to your vet about other ways to keep your cat comfortable.