The world has been struggling to contain the spread of coronavirus, and health services and authorities all around the world are trying to find ways to reduce the death count. According to a new research from Harvard University, even a small increase in air pollution can make the coronavirus more deadly. The aim of the study was to investigate whether long-term average exposure to fine particulate matter (PM2.5) increases the risk of COVID-19 deaths in the United States. For this, data was collected for approximately 3,000 counties in the United States (98% of the population) up to April 04, 2020.
The researchers at Harvard found that an increase of only 1 g/m3 in PM2.5 is associated with a 15% increase in the COVID-19 death rate. A small increase in long-term exposure to PM2.5 leads to a large increase in COVID-19 death rate, with the magnitude of increase 20 times that observed for PM2.5 and all-cause mortality. The study results underscore the importance of continuing to enforce existing air pollution regulations to protect human health both during and after the COVID-19 crisis.