Earlier quoted context omitted.
> like New Zealand, You mean an island nation with strict control over their ports and borders?
Not sure why this is downvoted; it’s absolutely correct. European, Asian, and North/South American supply chains are internally integrated. A truck driver transports goods from the Czech Republic to France and unloads them at the destination. For New Zealand it’s not like the ship’s crew is unloading goods at the last mile. A similar effect is at play in Hawaii, but the latter can’t deny entry to US residents because…
But does that truck driver need to have direct contact with other people to do their job? Why can't they unload their cargo, sleep at a quarantine facility, and then drive a new truckload in the opposite direction, without an opportunity to infect anyone else?
Also, island nations still have internal traffic. What's different about the borders between parts of Australia that allowed them to be closed when European borders had to stay open?