FeLV Management Checklist
FeLV (Feline Leukemia Virus): What Cat Owners Need to Know
Feline Leukemia Virus (FeLV) is a retrovirus that suppresses the immune system and can cause anemia, lymphoma, and other serious diseases in cats. It is one of the most common infectious diseases in cats worldwide. Understanding how it spreads and what it means for your cat is essential — especially if you have multiple cats or adopt from a shelter. This is educational content; consult your vet for diagnosis, testing, and management.
| Factor | Details |
|---|---|
| Transmission | Saliva, nasal secretions, mutual grooming, bites |
| Highest Risk | Outdoor cats, multi-cat households, kittens |
| Vaccine Available | Yes — recommended for at-risk cats |
| Diagnosis | Blood test (ELISA, IFA) by veterinarian |
| Can It Spread to Humans? | No — species-specific |
| Life Expectancy After Diagnosis | Varies; some cats live years with management |
Who Is at Risk
Kittens are most vulnerable because their immune systems are immature. Outdoor cats and cats in multi-cat households with unknown vaccination histories are at elevated risk. Cats who are FeLV-negative and live exclusively indoors with other FeLV-negative cats have very low risk.
Signs of FeLV-Related Illness
FeLV itself may not cause obvious symptoms for months or years. Signs of FeLV-related disease can include: weight loss, lethargy, pale gums, persistent infections, enlarged lymph nodes, and respiratory or digestive problems. Many FeLV-positive cats are diagnosed by routine testing before symptoms appear. Regular vet checkups are crucial.
Testing and Prevention
The AAFP (American Association of Feline Practitioners) recommends testing all cats for FeLV before they join a multi-cat household and before vaccination. Vaccination is recommended for all at-risk cats. Indoor-only cats with no exposure to untested cats are lower risk, but discuss vaccination with your vet based on your cat’s specific lifestyle.
Frequently Asked Questions
How does FeLV spread between cats?
FeLV spreads primarily through prolonged close contact with infected cats — mutual grooming, shared food/water bowls, bite wounds, and from mother to kittens. It does not survive long outside the body. Casual, brief contact is low-risk, but cats living together are at higher risk.
Can an FeLV-positive cat live a normal life?
Some FeLV-positive cats live for years with good quality of life. The virus affects each cat differently. Regular veterinary monitoring, keeping the cat indoors, preventing secondary infections, and supportive care can significantly extend and improve quality of life. Work closely with your vet to manage the condition.
Can FeLV spread to humans or dogs?
No. FeLV is species-specific and cannot infect humans, dogs, or other non-feline species. It is not a public health concern for people in the household.