Particulate matter (PM) air pollution is closely related to lower respiratory infections (LRIs). However, the global LRI burden attributable to PM remains unclear. Here, we provide a comprehensive assessment of the PM-attributable LRI burden using data from the Global Burden and Disease Study (GBD) 2019. We found that PM air pollution contributed to approximately 0.7 million deaths and 37.6 million disability-adjusted life years (DALYs) of LRIs in 2019. The LRI burden attributable to PM has decreased from 1990 to 2019, with a more pronounced decrease in household PM than in ambient PM. Unlike the decreasing trend in LRI burden due to household PM worldwide, nearly one fifth of countries experienced an increase of LRI burden due to ambient PM. The burden was unevenly distributed to less developed countries, mainly in Sub-Saharan Africa. All age groups experienced a decrease in the PM-attributable burden, with the most significant decrease in children younger than 10 years. Notably, individuals aged 20-84 years experienced an increase in the LRI burden attributable to ambient PM. Males had higher burden than females in the elder age and higher SDI regions. This study provided an evidence-based guidance for the prevention of LRIs and control of PM air pollution.
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