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 Cat Leukemia? Is it Contagious? According to the College of Veterinary Medicine at Cornell University, FeLV affects 2% to 3% of all healthy cats in the United States and up to 30% of cats who are sick or high risk.
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.

Furthermore, visual representations like the one above help us fully grasp the concept of Feral Cat Leukemia Data.
"The Feline Leukemia Virus (FeLV) usually affects young cats or kittens. Since the mid 1980's it has been prevented with a vaccine. There is no known treatment for Feline Leukemia. Symptoms gradually appear as the immune system weakens such as lymphoma (neoplastic disease).
Feline leukemia is very contagious and is spread through saliva, blood, urine, feces but mostly through grooming and fighting. Kris Wilson, Co-founder of 4 Pet's Sake, is attempting spay and neuter as many of the feral cats as possible.

monitoring data of the epizootic situation on the spread of leukemia of cats in the Moscow. cats population and hematological parameters of positive animals for this infection. .