Confirmed COVID-19 case counts were obtained from the Santé Publique France website [7]. The number of excess cases correlated with the cumulated number of COVID-19 cases reported in the same regions (r = 0.59; p < 0.05) in week 10. Assuming exponential growth (typical of early epidemics) from week 8 to 10, 2020, we found that the excess number of cases had an exponential growth rate per week of 0.69 (95% CrI: 0.55–0.86) in Grand-Est (GRE), 0.67 (95% CrI: 0.55 to 0.83) in Ile de France (IDF), 0.68 (95% CrI: 0.56 to 0.83) in Hauts de France (HDF), 0.61 (95% CrI: 0.48 to 0.75) in Occitanie (OCC) and 0.56 (95% CrI: −1.6 to 0.8) in France overall (Table).