Cat Feline Leukemia Virus: Prevention and Welfare Management

FeLV is a serious retroviral infection causing immune dysfunction and cancer in cats. Prevention through vaccination and testing protects individual cats and reduces transmission.

Key Facts

FeLV is transmitted through close contact including mutual grooming, bite wounds, and shared bowls
It causes progressive immune suppression, anemia, and lymphoma
Young cats and those with outdoor access are most at risk
Vaccination significantly reduces infection risk in cats with outdoor exposure
FeLV-positive cats can live comfortable lives for months to years with appropriate management

Welfare Considerations

FeLV infection progresses through several phases with ultimate development of progressive immune suppression leaving cats vulnerable to secondary infections, immune-mediated disease, and lymphoma. The welfare course of FeLV-positive cats varies significantly, with some maintaining good quality of life for extended periods while others deteriorate more rapidly. Welfare management focuses on minimizing stress to reduce immunosuppression, prompt treatment of secondary infections, monitoring for lymphoma development, and ensuring excellent nutrition. Indoor management protects both the FeLV-positive cat from infections and other cats from transmission. The decision about euthanasia must be based on quality of life assessment.

What You Can Do

Vaccinate cats with outdoor access against FeLV as part of their vaccination schedule
Test all new cats for FeLV before introducing them to existing cats
Keep FeLV-positive cats indoors to prevent transmission and protect their immune system
Provide excellent nutrition and stress-reduced environment for positive cats
Monitor for secondary infections and treat promptly
Discuss quality of life assessment regularly with your vet for FeLV-positive cats