A study published in the American Journal of Respiratory and Critical Care Medicine immunized individuals' risk of hospitalization from exposure to typical air contaminants increased by up to 30%.
The majority of severe acute respiratory distress syndrome (SARS-CoV-2) infections and deaths from 2019 (COVID-19) have been recorded in the United States.
Researchers found that if California met federal air quality guidelines, 9%, or at least 4,250 Covid-19 deaths, may have been avoided.