Trends over calendar time in antiretroviral treatment success and failure in HIV clinic populations.

ObjectiveEffective antiretroviral therapy (ART) has transformed the care of people with HIV, but it is important to monitor time trends in indicators of treatment success and antic future changes.MethodsWe assessed time trends from 2000 to 2007 in several indicators of treatment success in the UK Collaborative HIV Cohort (CHIC) Study, and using national HIV data from the Health Protection Agency (HPA) we developed a model to project future trends.ResultsThe proportion of patients on ART with a viral load 50 copies/mL rose fromz 118 (0.7%) to 857 (1.9%). Projections to 2012 suggest sustained high levels of success, with a continued increase in the number of patients who have failed multiple drugs but a relatively stable number of such patients experiencing viral loads > 50 copies/mL. Numbers of deaths are projected to remain low.ConclusionsThere have been continued improvements in key indicators of success in patients with HIV from 2000 to 2007. Although the number of patients who have ETCF is projected to rise in the future, the number of such patients with viral loads > 50 copies/mL is not projected to increase up to 2012. New drugs may be needed in future to sustain these positive trends.