  Following the highly restrictive measures adopted by many countries for
combating the current pandemic, the number of individuals infected by
SARS-CoV-2 and the associated number of deaths is steadily decreasing. This
fact, together with the impossibility of maintaining the lockdown indefinitely,
raises the crucial question of whether it is possible to design an exit
strategy based on quantitative analysis. Guided by rigorous mathematical
results, we show that this is indeed possible: we present a robust numerical
algorithm which can compute the cumulative number of deaths that will occur as
a result of increasing the number of contacts by a given multiple, using as
input only the most reliable of all data available during the lockdown, namely
the cumulative number of deaths.
