I remember reading an article back when AIDS was just a "fag" disease.
The author was trying to make a case for the virus jumping to humans during an experiment (British, I think) in Africa back in the 20's or 30's. The primate's they took blood from were immune to malaria, so they tried to pass that immunity on to a group of people by injecting them with this primate blood.
The test was unsuccessful but it was supposed to be in the same general area the AIDS first appeared.
This article was in a mainstream magazine or maybe even a newspaper because I remember at the time I thought it wasn't a publication I'd take very seriously without collaboration.