Once contracted, it is highly contagious and can be fatal to the affected cat.
Feline panleukopenia requires aggressive treatment if the cat is to survive, as this disease can kill cats in less than 24 hours.
Most panleukopenia deaths are due to secondary infections or dehydration resulting from diarrhea. This is because the virus affects the infected cat's immune system, leaving it vulnerable to secondary infection.
Comment: I'm so glad this kitty was on the road to recovery. My friend's little clan was destroyed by panleukopenia. I had kittens dying in my car on the way to the vet. Out of a litter of seven kittens, two survived with CH (both passed not long after...one just died and the other fell down stairs). It also killed the kittens' mother and other cats in the household. This isn't something to mess around with.