There was a large difference between northern and southern Italy described in this paper (from June so maybe things have changed since then). Note that norther

There was a large difference between northern and southern Italy described in this paper (from June so maybe things have changed since then). Note that northern Italy only has a slightly higher population density that the authors didn't think was significant. https://onlinelibrary.wiley.com/doi/10.1111/eci.13299 https://onlinelibrary.wiley.com/doi/10.1111/eci.13299