This fork of a COVID-19 streamgraph visualizes daily case numbers across five continents using an animated silhouette-style stacked area chart. Built with React and D3 v2, it renders SVG paths that change color palettes and update via tooltip interactions. The chart uses `d3.layout.stack` with a silhouette offset, `d3.svg.area` with cardinal interpolation, and `d3.time.scale` for the time axis, pulling data from CSV files for daily, monthly, or original case counts.