My pops was telling me about how back in the 60's the medical field was being warned about this disease that destroyed the immune system. They didn't know what it was back then but thought it was being brought back by soldiers in Vietnam, while others thought it was a man made disease that was going to be used to wipe out minority populations. Who knows where it came from but I know that Magic Johnson isn't dead from it, makes you wonder where he got the cure.
Ducktales.
HIV came from bushmeat in Africa.