Short-term exposure to wildfire-related PM2.5 increases mortality risks and burdens in Brazil

ABSTRACT: To assess mortality risks and burdens associated with short-term exposure to wildfire-related fine particulate matter with diameter ≤ 2.5 μm (PM2.5), we collect daily mortality data from 2000 to 2016 for 510 immediate regions in Brazil, the most wildfire-prone area. We integrate data from multiple sources with a chemical transport model at the global scale to isolate daily concentrations of wildfire-related PM2.5 at a 0.25 × 0.25 resolution. With a two-stage time-series approach, we estimate (i) an increase of 3.1% (95% confidence interval [CI]: 2.4, 3.9%) in all-cause mortality, 2.6% (95%CI: 1.5, 3.8%) in cardiovascular mortality, and 7.7% (95%CI: 5.9, 9.5) in respiratory mortality over 0–14 days with each 10 μg/m3 increase in daily wildfire-related PM2.5; (ii) 0.65% of all-cause, 0.56% o

SUBMITTER: Ye T 

PROVIDER: S-EPMC9741581 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature