The 2020 California wildfire season occurred alongside the COVID-19 pandemic, affecting air quality in many counties.
Researchers analyzed the impact of air pollution (including particulate matter and carbon monoxide) on COVID-19 transmission using data from 20 counties during this period.
Findings revealed that higher levels of air pollution were linked to increased confirmed COVID-19 cases, highlighting the need for health policymakers to create strategies for managing air quality during wildfires and health crises.