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.
Brief on Feline Leukemia Symptoms. In the early stages of an infection with the Feline Leukemia Virus, cats often show no signs of illness. As the virus affects the cat's system, observable but vague symptoms might emerge, including a loss of appetite, weight loss, and poor coat condition.
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).

As we can see from the illustration, Older Cat Leukemia Symptoms Database has many fascinating aspects to explore.
Feline Leukemia Virus Symptoms. Cat outside looking sick. There are limited specific symptoms to FeLV, because FeLV generally lowers the immune system. This can result in any number of secondary conditions (medical issues not caused by the virus itself).
Learn important information about cat leukemia, including how it spreads, common symptoms, testing & diagnosis info, treatments and prevention options.

Leukemia symptoms vary, depending on the type of leukemia. Common leukemia signs and symptoms include: Fever or chills. Persistent fatigue, weakness.How leukemia is classified. Doctors classify leukemia based on its speed of progression and the type of cells involved.
Cats get feline leukemia from other cats. The virus is spread in saliva, urine, feces, nasal secretions and milk from nursing mothers. When an infected cat bites or grooms another cat, that cat may develop the virus.