{"version":"1.0","type":"rich","title":"COVID-19 Stages","description":"This interactive map shows the progression of COVID-19 across U.S. counties over a six-day period in March–April 2020, with each county colored by its stage—from contained to outbreak. A date selector lets users step through daily updates, while hovering highlights individual counties. Built with Mapbox GL JS for rendering vector tiles, the choropleth colors are driven by feature-state values loaded from a CSV via d3-dsv and applied through Mapbox’s paint expressions. Popups and hover interactions use Mapbox’s event system, and the base map style is custom-hosted on Mapbox.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/6951f51a95e6427594414386311ac591?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}