Hi again, I had one that lived 10+ yrs. They use to say that positive cats did not live past age 3yrs. You must remember that some cats that test positive could be carriers. I have had some die of things that go wth "Old Age". I do hope that every one of mine that tests positive could be a carrier...but it does not work that way. I just take it one day at a time. The up side of rescuing positive cats is that you are blessed having a large number of cats go thru your life that you can give love to and that they are wanted.