This choropleth map visualizes the share of the population infected with HIV/AIDS in 2017, with countries colored according to prevalence rates using a sequential yellow-orange-red color scale. Gray marks countries with missing data. Built with React and D3 v5, the visualization uses the `geoNaturalEarth1` projection, `geoPath` for rendering country boundaries and graticules, and `scaleSequential` with `interpolateYlOrRd` for color encoding. Country shapes come from the World Atlas TopoJSON, while HIV prevalence data is loaded from a CSV file hosted on GitHub.