Causes of Feline Leukemia Virus (FeLV). FeLV in cats is spread through saliva. It is spread most commonly from those exposed to one another for longer periods of time through mutual grooming, mating, or shared food/water/litter boxes.
Only about 3% of cats in single-cat households have the virus, but for cats that spend time outdoors, the rate is much higher. Still, the prevalence of FeLV has decreased over the last 25 years because of vaccines and reliable tests. Symptoms of Feline Leukemia Virus.

Feline leukemia virus (FeLV) is one of the most common infectious causes of disease of cats globally. Infection with FeLV can cause a variety of clinical signs, impacting a cat's longevity and quality of life.

Feline leukemia virus (FeLV) affects cats immune system. Read FAQs about the disease, including transmission, signs, diagnosis, and prognosis.

Feline Vaccines: Benefits and Risks. Diarrhea. Neurological Disorders. Feline Vision Problems: A Host of Possible Causes. 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.
At Northern Pike Veterinary Hospital, we believe that education and prevention are the best tools in making sure our feline patients stay safe from FeLV. Heres what every cat owner should know about the Feline Leukemia Virus and how the FeLV vaccine can be a lifesaver.