Mapping and using OpenStreetMap to Improve Geographic Access to Healthcare in Rural Madagascar

This talk presents how large-scale mapping in OpenStreetMap enabled the creation of high-resolution tools to measure and reduce geographic barriers to healthcare in rural Madagascar, from optimizing community health worker deployment to planning door-to-door interventions. Building on a district-level pilot, we scaled this approach across multiple regions and estimated the resources required for nationwide mapping, highlighting how OSM can serve as a foundation for data-driven health system planning and improved access to care.