Apart from the fact that there is still substantial (if less) risk to younger people the real reason for lock down is to reduce the spread.
It's proved impossible - even with very strong measures - to protect at-risk groups by isolation. See both Australia (where a very large number of deaths were in supposedly isolated nursing homes) and Sweden (same).
It's proved impossible - even with very strong measures - to protect at-risk groups by isolation. See both Australia (where a very large number of deaths were in supposedly isolated nursing homes) and Sweden (same).