The Vet said that they are too young for FLiv/FIV because they could get a false positive and be negative at 6 months of age. So, I did a test on one of them and it read negative. Please be advised that when adopting a new pet to have them checked if you have other cats in the house.
I personally do not believe in killing cats that have or carry this disease. You can ask many experts and they can live healthy lives late into there teens.