This choropleth map visualizes COVID-19 cases per department in Argentina, using a logarithmic color scale from light beige to deep purple. The map is rendered with SVG paths via d3.geoPath, using a d3.geoTransverseMercator projection, and supports zooming through d3.zoom. It loads TopoJSON data from a GitHub repository, displays hover tooltips with department and case details, and includes a gradient legend and logarithmic axis. The code uses d3-scale, d3-geo-projection.v2, and topojson, with d3.queue for data loading.