This choropleth map displays the global prevalence of HIV/AIDS among adults aged 15–49 for the year 2017, using a sequential yellow-orange-red color scale to indicate infection rates. Countries with missing data appear in grey. The visualization renders world countries as SVG paths using d3.geoPath with a geoNaturalEarth1 projection, overlaid with graticule and interior boundaries. Data from the IHME CSV is joined to country geometries via ISO numeric codes, while React manages the application state.