Genetic research is progressing fast, I believe 2030 target to eliminate AIDS is possible. We have good understanding howto defeat virus. It will increasingly become ethical problem.
And every part of Africa uses inventions such as car or gun.
As far as R&D of new treatments, prophylaxis, and cures... I didn't know there were divergent strains with specialized treatments and one that is predominant in only Africa. This saddens me greatly because arriving at a cure will take upwards of $1 trillion USD and companies (even governments) need to have a hope of return on that investment. If (and this is a big IF) curing HIV in America does not actually cure HIV in Africa, then there is no way for the US market to subsidize the rest of the world, and much less likely for a cure for the African strain to ever be created.