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

Author

Listed:
  • Tingting Ye

    (Monash University)

  • Rongbin Xu

    (Monash University)

  • Xu Yue

    (Nanjing University of Information Science & Technology (NUIST))

  • Gongbo Chen

    (Monash University)

  • Pei Yu

    (Monash University)

  • Micheline S. Z. S. Coêlho

    (Urban Health Laboratory University of São Paulo, Faculty of Medicine/INSPER)

  • Paulo H. N. Saldiva

    (Urban Health Laboratory University of São Paulo, Faculty of Medicine/INSPER)

  • Michael J. Abramson

    (Monash University)

  • Yuming Guo

    (Monash University)

  • Shanshan Li

    (Monash University)

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% of cardiovascular, and 1.60% of respiratory mortality attributable to acute exposure to wildfire-related PM2.5, corresponding to 121,351 all-cause deaths, 29,510 cardiovascular deaths, and 31,287 respiratory deaths during the study period. In this study, we find stronger associations in females and adults aged ≥ 60 years, and geographic difference in the mortality risks and burdens.

Suggested Citation

  • Tingting Ye & Rongbin Xu & Xu Yue & Gongbo Chen & Pei Yu & Micheline S. Z. S. Coêlho & Paulo H. N. Saldiva & Michael J. Abramson & Yuming Guo & Shanshan Li, 2022. "Short-term exposure to wildfire-related PM2.5 increases mortality risks and burdens in Brazil," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-35326-x
    DOI: 10.1038/s41467-022-35326-x
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    References listed on IDEAS

    as
    1. Rosana Aguilera & Thomas Corringham & Alexander Gershunov & Tarik Benmarhnia, 2021. "Wildfire smoke impacts respiratory health more than fine particles from other sources: observational evidence from Southern California," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
    2. Xu Yue & Nadine Unger, 2018. "Fire air pollution reduces global terrestrial productivity," Nature Communications, Nature, vol. 9(1), pages 1-9, December.
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