Knowledge-based development is one of the strategies of the UNDP South East Asia HIV and Development (UNDP-SEAHIV) project in its technical assistance to countries. The goal is to strengthen countries' capacity to effectively combat the HIV/ AIDS epidemic. The mapping assessments supported by UNDP-SEAHIV are not an end in themselves. In this context, they were specifically designed for use as advocacy tools to inform decision makers in their continuing efforts to improve national HIV prevention strategies, policies, and programmes. Mapping assessment of HIV vulnerability is a new hybrid methodology devised by UNDP-SEAHIV. Consequently, it is important to get feedback from the countries one year after the round of Mapping Assessments (MAs). The national AIDS authorities were asked how they had used the results. The report presents the countries' own review findings.