This choropleth map visualizes the global share of the population infected with HIV/AIDS for the year 2017, using a yellow-orange-red color scale to represent prevalence rates. Countries with missing data appear in gray. The visualization is built with React and D3 v7, using `geoNaturalEarth1` and `geoPath` to render world countries from TopoJSON data, with geographic graticules and interiors drawn as overlays. The data comes from a CSV file containing HIV prevalence statistics from IHME.