{"version":"1.0","type":"rich","title":"ILINet Flu Surveillance Data","description":"This visualization displays annual ILI flu case totals across U.S. regions, with lines for each year from 2015 to 2019 plotted against week of year. The chart uses an unordered color scale for the year field, making it harder to compare temporal trends. Built with the vega-lite-api and d3, it aggregates weekly ILITOTAL values by year and region before rendering the line marks. Data originates from CDC FluView Interactive, loaded as CSV via d3.csv, and the visualization supports tooltips on hover.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/bc7acaae06a54770bb3bfc0dbd87f978?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}