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Association between long-term exposure to particulate air pollution with SARS-CoV-2 infections and COVID-19 deaths in California, U.S.A. | LitMetric

AI Article Synopsis

  • - The study analyzed 3.1 million SARS-CoV-2 infections and nearly 50,000 COVID-19 deaths in California from February 2020 to February 2021, focusing specifically on the impacts of long-term exposure to particulate matter (PM) less than 2.5 μm in diameter.
  • - Results showed that individuals in areas with the highest PM exposure had a 20% higher risk of infection and a 51% higher risk of death from COVID-19 compared to those in the lowest exposure areas, with vulnerable populations being more affected.
  • - These findings emphasize the link between air pollution and COVID-19 outcomes, supporting the need for efforts to reduce air pollution to improve public health, consistent

Article Abstract

Previous studies have reported associations between air pollution and COVID-19 morbidity and mortality, but most have limited their exposure assessment to a large area, have not used individual-level variables, nor studied infections. We examined 3.1 million SARS-CoV-2 infections and 49,691 COVID-19 deaths that occurred in California from February 2020 to February 2021 to evaluate risks associated with long-term neighborhood concentrations of particulate matter less than 2.5 μm in diameter (PM). We obtained individual address data on SARS-CoV-2 infections and COVID-19 deaths and assigned 2000-2018 1km-1km gridded PM surfaces to census block groups. We included individual covariate data on age and sex, and census block data on race/ethnicity, air basin, Area Deprivation Index, and relevant comorbidities. Our analyses were based on generalized linear mixed models utilizing a Poisson distribution. Those living in the highest quintile of long-term PM exposure had risks of SARS-CoV-2 infections 20% higher and risks of COVID-19 mortality 51% higher, compared to those living in the lowest quintile of long-term PM exposure. Those living in the areas of highest long-term PM exposure were more likely to be Hispanic and more vulnerable, based on the Area Deprivation Index. The increased risks for SARS-CoV-2 Infections and COVID-19 mortality associated with highest long-term PM concentrations at the neighborhood-level in California were consistent with a growing body of literature from studies worldwide, and further highlight the importance of reducing levels of air pollution to protect public health.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9316717PMC
http://dx.doi.org/10.1016/j.envadv.2022.100270DOI Listing

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