Driving Up Covid-19 Deaths?

A German study, using data from France, Germany, Italy and Spain, has revealed that nearly 80% of Covid-19 deaths occur in the regions where the nitrogen dioxide levels in the air are highest (https://www.theguardian.com/environment/2020/apr/20/air-pollution-may-be-key-contributor-to-covid-19-deaths-study). This pollutant is mainly produced by vehicles with diesel engines. This is yet another indicator of the dangers of living, being taught or working in locations with high levels of air pollution. Levels have, of course, generally declined as a consequence of traffic being reduced by lockdowns but we do need to strive to stop them rebounding as economic activity returns.