Feline Leukemia Virus Infection (FeLV)

This disease, caused by a virus, results in suppression of the immune system and in cancer. All unvaccinated cats are susceptible to FeLV. Vaccination can prevent FeLV infection, and should be administered annually.

All cats of unknown FeLV status should be tested before being introduced into a household, particularly if they will enter into contact with other cats.

Cats can become infected by contact with the saliva and blood of carriers shedding the virus; this may occur in a multi-cat household where there is sharing of feeding bowls and communal grooming. Kittens may contract the virus from the infected mother through grooming. Feral cats are often FeLV carries and infect domestic cats through bites and scratches. Infected cats may develop the disease within two years of the time of infection.

While the disease is not curable, young cats with early infections may mount an immune response that neutralizes the virus. Holistic methods can help to encourage that natural virus neutralization process. FeLV infected cats are otherwise likely to die of cancer or as the result of secondary infections.