This choropleth map visualizes the global prevalence of HIV/AIDS among adults aged 15–49 in 2017, using a yellow-to-red sequential color scale to show infection rates per country. Built with React and D3 v5, it projects country boundaries with d3.geoNaturalEarth1 and d3.geoPath, overlaying graticules and interiors. Country data from the IHME dataset is joined to geographic features via ISO numeric codes, with missing regions rendered in grey.