{"version":"1.0","type":"rich","title":"ILINet Flu Surveillance Data","description":"This line chart displays annual U.S. influenza-like illness (ILI) totals by week, with one colored curve per year from 2015 to 2019, enabling year-over-year comparison. The data originates from CDC FluView Interactive and is loaded via `d3.csv`. The visualization uses the Vega-Lite API (`vl.markLine`), aggregating `ILITOTAL` by year, region, and week with `vl.aggregate` and encoding year with an unordered color scale. A custom `config` adjusts axis and label styling for readability.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/02ddc8155c194137b1a3494bde21185a?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}