This choropleth map visualizes the share of the population infected with HIV/AIDS for the year 2017, using a yellow-orange-red sequential color scale to encode prevalence rates. Countries without data appear in gray. The map is rendered with SVG paths generated by d3.geoPath and the geoNaturalEarth1 projection, with graticules and country boundaries drawn from World Atlas TopoJSON data. The visualization is built in React, fetching CSV data via d3.csv and mapping ISO country codes to numeric identifiers for joining with the geographic features.