April 8, 2020
Union of Concerned Scientists (blog)
The most important result is that we found that people living in counties in the US that have experienced a higher level of air pollution over the past 15-17 years have a substantially higher COVID-19 mortality rate. To quantify, we found that a one unit increase in long-term average exposure to fine particulate matter is associated with a 15% increase in COVID-19 mortality rate on average in the analysis. This increase accounts for adjustments for any systematic differences between county level characteristics [such as population density or smoking rates].
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