This interactive line chart visualizes global COVID-19 death counts over time, with each country represented as a gray line on a logarithmic scale. Hovering over any point highlights the full trajectory for that country and displays a tooltip with the country name, death total, and date. Built with React and D3 v5, the visualization uses `d3.Delaunay` and `d3.voronoi` to create an invisible overlay that captures mouse events for precise point selection. Data comes from the CSSE COVID-19 time series CSV, rendered as SVG paths with axes labeled in Portuguese.