For the second International Conference for the Social Sciences and Humanities in HIV we invite papers that address the theme of "Knowing practices". This dual concept poses questions about the multiple practices that comprise the dynamics of the epidemic and how the practice of knowing itself, is engaged and operationalised. While papers that address the conference’s theme "Knowing practices" are especially relevant, papers contributing to the advance of rigorous social scientific and humanities approaches to HIV and take other perspectives on the social sciences and humanities are also encouraged.