At the start of a new hurricane season, Gulf Coast residents have moved beyond the "lessons learned" stage and are forging ahead with rebuilding. Central to those efforts is assuring health. While it has become clear that a sustainable health system requires engagement from other non-traditional health-related disciplines, the evidence base supporting such transdisciplinary approaches is sparse. This presentation is aimed at examining post-disaster health systems in three different geo-political settings to identify factors influencing sustainability. The interconnectedness of the three core public health functions at the system level will also be explored. NOTE: This course was originally delivered as a satellite broadcast.