[godelski]

What matters is how many people you can transmit the disease to. If population density is high then you are crossing paths with a larger number of people every day then compared to a more population density.

What matters is the interaction cross section.

[ajsnigrutin]

Population density is meaningful only locally... so a country such as australia can have very low population density nationally, but a high one in one of the large cities.

Population densities of both Jerusalem and Stockholm are high enough for covid to spread fast, and forrests and deserts are empty enough to make it hard for covid to spread. Averageas are meaningless here, because even statisticians can drown in a river with average depth of 0.5m.

[godelski]

Welcome to Simpson's Paradox