 What if we could predict potential dengue outbreaks before they happen? Dengue is a viral infection spread through the bite of infected mosquitoes. Vietnam has some of the highest numbers of dengue cases in the world. The Mekong Delta region is among the most affected. A new digital tool with funding in Vietnam could predict where dengue outbreaks might happen without relying on case reporting, as early as two months in advance. The tool could help public health officials in Vietnam get ahead of the disease and reduce its impact in communities most at risk.