Measuring HIV stigma: existing knowledge and gaps.

The growing recognition of the reduction of HIV stigma as central to effective programs across the HIV/AIDS prevention to care and treatment continuum is leading to an increasing number of programs focused on stigma reduction. Correctly evaluating the impact of these programs depends on having a good set of measures that effectively capture and distinguish the complexities of HIV stigma. This paper reviews the existing literature on HIV stigma measurement and identifies key gaps that remain.