Hugely. Taiwan is an 'isolated island' with no outbreak i.e. no community spread. They have the 300 cases there nailed down. So anyone coming in the country is

Hugely. Taiwan is an 'isolated island' with no outbreak i.e. no community spread. They have the 300 cases there nailed down. So anyone coming in the country is a source of contamination. Otherwise - this is still a problem. In my little regional city in Canada - cases are small and they've already peaked. Case load is small enough that we are now a 'landlocked' island. Within days we could feasibly 'go back to work' were we to be sure nobody is 'entering the bubble'. That won't be the case, but you see what I mean. I think borders are a pretty big deal in terms of being able to contain this problem. I suggest that in order to travel internationally in the next little while, it might be required to have a 'test card' indicating you're clean from COVID within the last x number of days for example. Either that or everyone coming into a country has to isolate for x days.