How long will my cats live if the have Feline HIV or leukemia?

So over the years we have taken in homeless cats, friends cats who are moving and can no longer care for them, and some we adopted. We have opened our home to the sweetest group of 16 cats. They are ALL indoors and never go outdoors they have the whole 2 story house to roam and they love it. They do however have an outdoor enclose they have access to 24/7 but its is right out our window and they cannot leave the deck area. Somewhere along the way I think we may have adopted a cat with Feline HIV or leukemia, the reason i think that is because we lost 2 cats in the last year out of nowhere. I mean yeah with all those cats you lose 1 here and there maybe but usually you know why. these cats got sick out of nowhere and just died very rapidly with not much of a warning. How long can cats live if they have HIV and what can we do to help them live longer?

Let me tell you a story about a cat and some evil humans...

There once was a cat who lived with owners who should never have been allowed near animals. These owners were too negligent to get their cat spayed, and let her go outside whenever she wanted. The cat became pregnant, and the owners (because of this or something else, I don't know) were angry. They decided that it would be appropriate to set the poor kitten on fire. A few day later, a poor burned, barely alive cat was found by the humane society and brought to a clinic to be euthanised. The vet saw that despite 3rd degree burns over 1/3 of the cats body and lots of pain, the kitty was purring. The vet decided to treat her. After 3 months, the burns were starting to heal, fur was starting to grow back, and even though she was missing one ear and half a tail, Toast (as the vet had named her) was loveable and on her way to recovery. Then came the FIV/FeLV test. Toast was positive for FeLV. Despite poor Toast's horrible bad luck so far, she then met Johanna, an assistant at the clinic, who fell madly in love with her and took her home.

This tragic tale took place just over a year ago, and Toast (now quite fluffy, healthy and wonderful) is lying beside me purring. Moral of the story? FeLV is not a death sentance. As long as you keep your cats vaccinated and healthy, they can live for a few (sometimes more) healthy years. FeLV cats have an increased susceptibility to infection and other diseases, so you have to be extra careful that they don't come in contact with any.

As for FIV, cats often live long apparently healthy lives without showing signs of the disease. Again, be extra careful as they have compromised immune systems. However, you seem like somebody who really cares about your cats' wellbeing, so I'm sure you'll give them excellent care. Good luck!

It's two different diseases and two different answers. Feline leukemia virus is a big killer and can be prevented with a vaccine.

FIV is an autoimmune disease similar to HIV (humans cannot contract the feline version). They can live very long lives if they are protected from secondary infections - usually by keeping them inside and very healthy. However, they must be spayed or neutered and kept away from other cats that they may fight with - it is transmitted by fighting and mating.

my friends cat who was diagnosed with leukemia at the age of 13yrs went on to live till he was 19yrs old with the right treatment.but he was a only cat.
An infected cat should be kept indoors, preventing contact with other cats and also keeping it from exposure to disease or other types of injury.