Feline Panleukopenia AKA Pan-Leuk, FP (feline panleukopenia) What is Feline Panleukopenia? Feline Panleukopenia (FP) is a very contagious viral disease of cats caused by the feline parvovirus. Kittens are the most vulnerable to the virus, but adult cats can also be affected. This virus affects their gut, immune system, and nervous system. It is fatal … Continue reading Panleukopenia In Cats And Kittens