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It is of interest to note that risk of infection is associated with population density in this study. My research indicates that weighted population density is associated with higher SARS-CoV-2 deaths in US states, in UK local authorities and sub-local authority geographies [1,2]. This is an entirely logical association.
1. Jones R. Would the United States have had too few beds for universal emergency care in the event of a more widespread Covid-19 epidemic? IJERPH 2020; 17: 5210. https://doi.org/doi:10.3390/ijerph17145210
2. Jones R. How many extra deaths have really occurred in the UK due to the Covid-19 outbreak? XIII. Population density and risk of Covid-19 death. DOI: 10.13140/RG.2.2.23027.35365