Question to the Department of Health and Social Care:

To ask Her Majesty's Government what assessment they have made of any correlation between nitrogen dioxide and nitric oxide levels in the air and COVID-19 (1) infection, and (2) death rates.

Currently, there is no clear evidence to suggest that nitrogen dioxide and/or nitric oxide have a direct link to the infection rate or death rate of COVID-19.

Public Health England and other Government departments are reviewing and considering factors such as air pollution which may influence the health impact of COVID-19. This includes assessing whether there is any evidence of an association between exposure to gaseous pollutants or particulates and COVID-19 mortality in the United Kingdom.