This choropleth map visualizes the INFORM epidemic risk index by country, using a five-class orange color scale. Darker shades indicate higher risk. The map is rendered as an SVG using D3.js v4, with the `d3.geoMercator` projection and `d3.geoPath` to draw country boundaries from a world GeoJSON file. Data values from the `informrisk.csv` file are joined to the map features by ISO3 code, with the `d3.scaleThreshold` function mapping risk scores to colors.