Should cats infected with FeLV or FIV be vaccinated differently?
Feline leukemia virus (FeLV) and feline immunodeficiency virus (FIV) can suppress theimmune system in some cats. It is generally preferable to use a killed vaccine instead of a modified live vaccine in animals with immunosuppression. If the FeLV or FIV-infected cat appears healthy, the cat should be vaccinated according to the vaccination schedule for non-infected cats.