Thank you for the valuable presentation. Undeniably, Dengue Fever is one important disease faced by tropical countries like ASEAN with the vast majority in urban areas. I agree that sentinel surveillance is appropriate.
Regarding the structure of surveillance, I have another opinion that Dengue is also applicable to an indicator-based system in addition to event-based ones. All data gathered from healthcare providers will be credible to define the outbreak based on seasonality trends, burden, and risk factors.
Best.