This visualization maps the weekly incidence of influenza-like illnesses across 22 French regions in 2014, using a choropleth overlaid on a geographic map of metropolitan France. The data, from the GrippeFrance2014.csv file, records weekly case counts from January through December, with a cumulative yearly total per region. The map is rendered as an SVG using D3 v4, with region boundaries drawn as paths. Color intensity on each region encodes the value for the selected week, and a date slider or control allows viewers to step through the 52 weeks, revealing the temporal spread and intensity of flu activity across the country.