This interactive choropleth map shows the prevalence of HIV/AIDS across US states for the year 2017, with darker orange-red fills indicating higher infection rates and gray for states with missing data. The visualization uses React components to render an SVG, with d3.geoAlbersUsa and d3.geoPath projecting TopoJSON state boundaries from the us-atlas dataset. Color encoding relies on d3.scaleSequential with an interpolateYlOrRd scheme, while HIV prevalence data comes from an IHME CSV file joined to state codes via ISO-3166 lookup.