Philip Goulder

HIV adaptation to the most effective immune responses we can make against it comes at a significant cost to its ability to replicate, anything we can do to increase the pressure on HIV in this way may allow scientists to reduce the destructive power of HIV over time.

Overall we are bringing down the ability of HIV to cause AIDS so quickly, but it would be overstating it to say HIV has lost its potency -- it's still a virus you wouldn't want to have.