Like I said before, my best friend had HIV for 5 years. Now he doesn't. How do you explain that? It's God brother.
Because it progressed to AIDS now, or it was a false positive, or not HIV, it doesn't go away, and if it did, they need to get his DNA because his DNA would be quite valuable in the fight for a cure. BTW was your friend gay by any chance, or just had loose morals?