This choropleth map displays the global prevalence of HIV/AIDS among individuals aged 15-49 in 2017, using a yellow-orange-red color scale to represent infection rates. Countries lacking data appear gray. The visualization employs d3.geoNaturalEarth1 projection with d3.geoPath and d3.geoGraticule to render country boundaries and graticules from World Atlas TopoJSON, while population data from the IHME is joined to countries using ISO numeric codes. The map is built with React, D3 v5, and rendered as SVG, with a white sphere background and light gray graticule lines for spatial context.