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.
What Is Feline Leukemia Virus? Cat looking up with head tilted. FeLV is a retrovirus. This class of viruses inserts its genetic material, called RNA, into your cats own DNA.

Such details provide a deeper understanding and appreciation for Leukemia In Cats With Multisystem Disease Emedicine.
Learn important information about cat leukemia, including how it spreads, common symptoms, testing & diagnosis info, treatments and prevention options.

Stages of Cat Leukemia Symptoms. The disease is often referred to by different names depending on the stage: Early Stage: Primary Viremia. Some cats have a strong enough immune system to fight the disease while it is trying to establish itself in the bloodstream when it starts to spread.
Feline Leukemia Virus (FeLV) is a common but preventable virus that can affect almost all cats. Dr. Boldan shares how FeLV weakens a cat's immune system, symptoms, and how the feline leukemia virus vaccine can be life-saving.