Gallery: Intermediate + Map + Line chart + Time series plot

This map presents an estimate of the intensity of the flu in 20 countries, compared with data for the last six years. The upper panel is a line graph showing the current and past trends of flu intensity by country. The lower panel is the choropleth map with the shading corresponding to the intensity of the flu. The innovative feature of this visualisation is the underlying method of estimation: the intensity of the flu has been approximated based on the number of internet based queries submitted during a certain period of time. Analyses of past data have shown that this method offers good predictions of real levels of the illness.