This visualization displays the global prevalence of HIV/AIDS among adults aged 15-49 for the year 2017, using a world map where each country is colored on a yellow-orange-red sequential scale. The map, rendered as an SVG with React and d3.v5, uses the `geoNaturalEarth1` projection with graticules, and country boundaries from World Atlas TopoJSON. Data is loaded from an IHME dataset via `d3.csv`, and missing countries appear in gray.