Felineleukemiavirus (FeLV) is one of the most common infectious causes of disease ofcatsglobally. Infection with FeLV can cause a variety of clinical signs, impacting acat's longevity and quality of life.Clinical sequelae includepain, anorexia, and tooth loss.
Youngcatsand those with underlying health issues are more at risk of acquiring felineleukemia, but any unvaccinatedcatis at risk. Onlycatscan contract the felineleukemiavirus, as it is a species specific disease. There is a strong link between FeLV and feline lymphoma orleukemia.
As acatparent, hearing the words “felineleukemia” can be frightening. This serious viral infection harmscatsworldwide, affecting between 2-3% of allcatsin the U.S. 1. This deadly virus doesn’t just makecatssick – it affects their immune system and can shorten their lives.

Catsthat become infected with felineleukemiamay show no signs at first. They could seem perfectly healthy for weeks or months but gradually deteriorate in health. Somecatswill go through phases of illness and health in a repetitive cycle.
Catswithleukemiamay exhibit symptoms such as loss of appetite, weight loss, lethargy, swollen lymph nodes, anemia, infections, easy bruising, or bleeding. These symptoms can vary greatly in severity and may not all be present in everycatwithleukemia.

Discover videos related to First Symptoms ofLeukemiainCatson TikTok. Last updated 2025-01-13.Felineleukemiavirus (FeLV) is one of the most common infectious diseasesincats. In this video you can learn more about this virus and how it is transmitted.