What happens if my cat is exposed to FeLV?
After it is exposed to the disease, a cat's system could react in different ways. Veterinarians have no reliable way of predicting reactions, so they usually can't help cats until it's too late. About 40 percent of exposed cats - usually those who are healthy and stress-free - manage to destroy the disease and become immune to it. The other 60 percent divide into carriers and symptomatic cats.