The disease that affects 34 million people around the world (1.2 million in the US) can be cured. The drug cocktail that virtually erases the effect of HIV and allows folks to live a long life is coming down in price. What once used to be $15-30,000/year is now around $3-4,000/year.
A dramatic drop and still not low enough, but as the Economist reports, some rich African nations are starting to purchase them en masse. Especially after new studies are showing that transmission of HIV while on the drugs is reduced by 98%. Meaning that with a coordinated effort a country can stop the spread of the disease, prevent death, and begin the arduous process of removing it from society.
This puts AIDS in the same realm as TB, Measles, Tetanus, Diptheria. All diseases cured by coordinated massive efforts to remove the outbreaks from society. Yes, those use a vaccination but the process is the same and both require a mobilized, organized effort.
That is the turning point. The problem is no longer a disease raging out of control that will kill anyone who contracts it. Now, it is more like diabetes where life is definitely harder for those who have it but imminent death.
For more details and research, plus learn how countries are responding to this, check out the Economist Podcast (search in iTunes), listen to the audio version below, or read the feature article linked below.