Before revision:  We simulate the "escape from Milan" that occurred on March 7th-8th  , when many travelers moved from a high-risk zone (Milan) to southern regions of Italy (Campania and Lazio) immediately after an imminent lockdown was announced.
After revision:  We simulate the "escape from Milan" that occurred on March 7th-8th 2020 , when many travelers moved from a high-risk zone (Milan) to southern regions of Italy (Campania and Lazio) immediately after an imminent lockdown was announced.