Before revision:  The cumulative incidence over the two waves is computed close to 50 \% for France and 80 \% for Ile de France.
After revision:  The cumulative incidence over the two waves is computed close to 60\% for R=1.3 and 70\% for R=1.4. This suggests that if individual immunity exists, herd immunity is likely to be achieved in France by the end of October 2020.