This is an excellent example, the chief epidemiologist in Denmark had a clash with the Danish PM about this, because evidence does not support closing borders a

This is an excellent example, the chief epidemiologist in Denmark had a clash with the Danish PM about this, because evidence does not support closing borders as an effective policy when we already have a pandemic. In Denmark, the measure was intruduced despite this, presumably because the government wanted to demonstrate forceful action. Sweden still has open borders (not that it makes much difference since most other countries have closed them :) ).