I got a chance to learn a bit about New Zealand and the Covid measures they took. I live in the US and it’s hard for me to get a complete, accurate picture of what life is like in other countries, so feel free to correct me, but...
It seems to me they closed their borders before it had spread very far. Because they did so early, plus a lockdown, they were able to eliminate Covid from New Zealand.
Unfortunately, they are still vulnerable - they have to keep their borders closed until the rest of the world has reached immunity, or they risk letting Covid sweep through their population. We will have to continue to watch them to see if they are able to keep Covid out, and at what cost. They are losing much of their tourism revenue.
Contrast that with Sweden - they seem to be mostly through with Covid while the rest of Europe is still getting hurt by it. Meaning they have their freedom. When all is said and done, we can look at the totals. We’ll have to wait and see and compare.