Density may be a factor but it seems it can be managed. From what (little) I've read it seems Singapore is an example that warrants study.Going back to the OP, I'm wondering if the states with the most restrictive virus boating laws also have the most densely overpopulated cities? As an example, are Michigan's laws based on the population of Detroit where the population density makes "everyone going for a walk " a violation of social distancing.
After this is over, wonder if pandemic scientists will examine population densities (number of people residing in each square mile of a city) and conclude that reasonable separation is unattainable and density needs to be reduced, probably not.
Ted
Didn't look to compare density to other US cities / states but they have a relatively high density yet has been perhaps one of the best examples of how to manage through a pandemic.
I would we need to learn how to manage it intelligently and how may be different in different density areas. I dont think we will wipe out large cities in the US as a way to be successful In the future!