Association of Particulate Matter (PM2.5) With COVID-19 Infection and Mortality in Low-and Middle-income Asian Countries: A Systematic Review and Meta-analysis

Our findings provide robust evidence that PM2.5 exposure is a significant risk factor for COVID-19 infection in low-income and middle-income Asian countries. The available evidence was insufficient to establish a clear association with mortality. These results underscore the urgent need for strengthened air quality control policies as a critical component of public health strategies to mitigate the burden of respiratory pandemics.