*air pollution has been identified as the largest environmental cause of disease and premature death in the world.  Several studies show little to no severe covid19 in areas free of air pollution, especially nitrogen dioxide.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8390106/
https://pubmed.ncbi.nlm.nih.gov/32952266/
https://www.scmp.com/news/china/science/article/3081292/higher-covid-19-death-toll-pollution-hotspots-points

thus, by todays accepted standard of response, we should shut down the world, stop people from driving, close all business that requires automobile transport and arrest those who continue to travel*