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. 2023 Mar 2;10(1):145–168. doi: 10.3934/publichealth.2023012

Figure 1. Infected people on population density per km2, considering the groups of cities with high or low air pollution (high particulate compounds emissions in the atmosphere). Note: Coccia [59] reveals that diffusion of COVID-19 is higher in cities with high air pollution.

Figure 1.