“…Extensive human and financial resources will be needed to support HIV vaccine and other biomedical HIV prevention trials for the foreseeable future. Systematic implementation of integrated (i.e., qualitative and quantitative) social science research among populations at higher risk for HIV [e.g., 11,13,14,17,26,29,30], and particularly in the context of HIV vaccine clinical trials [e.g., 5,12,31,32], may build evidence to support the highest standards of trial implementation and community engagement [6,27,33]. Incorporating social science research in HIV vaccine trials also may help us to prepare for the monumental challenges of future HIV vaccine dissemination [34,35].…”