Exactly. That is when a few cases becomes a big deal, and the long term challenge is how to deal with the reality that there will be cases when things reopen. The EU decided to open to 'safe' countries and is now balancing new cases vs continuing with reopening. Yet people seem to jump on the outbreaks as 'proof' that countries should remain closed.Bolding is mine. I tend to agree with you. I always wonder what the long term outcomes they expect to see from this. I understand it in the short term, but they run the risk of re-infection whenever they do open back up. Look at what's happening in Australia (sorry I forget which state right now). I agree with not allowing travel in right now, but none of these nations are self sustaining enough to remain closed off forever. Or even long term honestly.
The long term loss as well as the impact on other health care needs to be balanced. Several countries have almost painted themselves into a corner. What will happen when Trudeau decides that it is time to open Canada to more visitors, and cases rise? But he needs to eventually do what Merkel did, and lead the country to consider all aspects, not just COVID. It's not an easy task.
I'm glad that I have visited Australia a lot recently, and I know that they have a lot of domestic business. But the reality is that they still need international trade and tourism. And then there is the impact on other countries - Fiji, one of the poorest countries in the world, will have even more starvation thanks to the policies of Australia and NZ, as they will have zero tourism revenue from those sources.
There is no easy answer to all of this, but the reality is that the expectation to remain at zero will not work for most countries. Vietnam is an outlier, and what they are doing/did and their economy/politics are unique to them.