{"version":"1.0","type":"rich","title":"ILINet Flu Surveillance Data","description":"This visualization uses a multi-line chart to show annual ILI total flu cases in the US from 2015 to 2019, enabling year-over-year comparison—revealing the 2018 peak and the extended 2019 season. Ordered color encoding on the year field makes newer years darker for readability. Built with Vega-Lite API via `vl.markLine`, it aggregates data by year, region, and week, using `vl.sum('ILITOTAL')`. The data originates from CDC FluView, loaded as CSV through `d3.csv`.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/2ce03d9ac2514d65a672c6482e19b7b4?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}