This interactive map visualizes the spread of Ebola cases, plotting individual locations as dots on a tiled satellite basemap. The geographic coordinates (longitude, latitude) of each case are stored in a GeoJSON FeatureCollection, with properties indicating the country and sometimes a specific address or town (e.g., "Dallas, TX", "Gueckedou", "Boende moke"). Rendered as an animated SVG overlay on a Leaflet map, the visualization supports zooming and panning. The map is initialized to a world view centered at [20,-37] with a zoom level of 3, and the D3-selected SVG layer is synced with Leaflet's overlay pane to ensure that the points remain correctly positioned as users interact with the map. The points are plotted based on their latitude and longitude coordinates from the dataset, with labels providing the location name and country. This example demonstrates a straightforward pattern for combining Leaflet's interactive map controls with D3's data-driven SVG rendering, useful for geographically distributed point data like disease outbreak locations.