This paper reviewed the increase in viral suppression and sustained viral suppression in USA adults on ART between 2009 and 2013.
Viral suppression increased in a linear fashion from 72 - 80% a significant 2% rise year on year. Sustained virological response followed a similar trajectory from 58% - 68% over the same time. This was not explained simply by an increase in number of people on therapy.
Women, 18-29 year old's, 30-39 year old's, African Americans all had a greater benefit than the overall. MSM were higher than the average at all time points. There were two Guidelines introduced during the study period which actively promoted treatment and barriers and delays to accessing AIDS drugs. All suggesting that policy change is having impacts.
This is Oral paper number 53, in session O-5, if you want to have a look when the presentations go on-line. http://www.croiconference.org/