Injecting drug use has been the major driver of HIV epidemic in this province, and there is a concern that HIV will spread to wider population. Since the program coverage to date is relatively low, there is a need to know the level of program coverage as to optimize the prevention at relatively low cost. Using two linked already-available projection models, Asian Epidemic Model (AEM) and Resource Needs Model (RNM), the cost effectiveness analysis was undertaken to generate the cost effectiveness ratio (CER). Five scenarios with different level of coverage were built using the RNM: baseline,...