This choropleth map visualizes the weekly incidence of influenza across French regions for 2014, using the GeoSJON file `regions.geojson` to render the regional boundaries. The map shows the cumulative number of reported cases for November 2014, with regions colored on a five-step sequential scale from light to dark red based on the total for that month. The visualization is built with D3 v3, using `d3.geo.path()` with a conic conformal projection and `d3.geo.json()` to load the geographic data. The CSV `GrippeFrance2014.csv` provides the weekly case numbers, which are summed for November and joined to the regional geometries. Hovering over a region displays a tooltip with its name and the summed value, and the color scale is computed from the minimum and maximum of these November totals.