A preliminary study has found the first evidence of a link between higher levels of air pollution and deaths from Covid-19 in England.
The analysis showed London, the Midlands and the north-west had the highest levels of nitrogen oxides and higher numbers of coronavirus deaths.
The research has not yet been peer-reviewed and shows only a correlation. The scientists behind the study said more research was needed to confirm a causal link and rule out other possible factors such as income levels and any difference in age profiles in the regions.
