Italy was forced to take unseen measures to prevent the spread of corona-virus going to the whole country being "locked-down". Yet the initial lock-down allowed some of the people to try to escape from it:
Chaos and rumor reigned as the proposed government decree leaked to Italian media hours before it was signed. Even after it went into force Sunday afternoon, it contained a prominent provision that implied people like me could go home and quarantine ourselves.
Theoretically such announcements should be made seconds not hours before they actually become effective to prevent people to act out of fear.
Question: What was the point of announcing a corona-virus lock-down hours before it becomes effective?