Forecasts of hospital admissions over the test period (March 7, 2021, to July 6, 2021). (A) Trajectories predicted by the individual and ensemble models for all prediction horizons in metropolitan France. The black line is the eventually observed data (smoothed), and the colored lines are trajectories predicted on day t, for prediction horizons t−1 up to t + 14. (B) Forecasts of the ensemble model by region at 3, 7, and 14 d. The black line is the eventually observed data (smoothed). Shaded areas represent 95% prediction intervals. Regions: Auvergne-Rhône-Alpes (ARA), Bourgogne-Franche-Comté (BFC), Bretagne (BRE), Centre-Val de Loire (CVL), Grand Est (GES), Hauts-de-France (HDF), Île-de-France (IDF), Normandie (NOR), Nouvelle-Aquitaine (NAQ), Occitanie (OCC), Pays de la Loire (PDL), and Provence-Alpes-Côte d’Azur (PAC).