This comparison is too simplistic to be useful. Sweden and Norway have a couple of large cities, and then endless swaths of nearly-uninhabited tundra. If you c

This comparison is too simplistic to be useful. Sweden and Norway have a couple of large cities, and then endless swaths of nearly-uninhabited tundra. If you count Greenland as part of Denmark, its density probably drops to below that of Norway or Sweden, but it's easy to see why that wouldn't tell you anything useful about covid. It's much better to compare metro regions (e.g. stockholm metro vs copenhagen metro) against each other, if you can find the appropriate case data.