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Deprecated: Implicit conversion from float 265.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Sci+Adv 2021 ; 7 (33): ä Nephropedia Template TP
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Excess of COVID-19 cases and deaths due to fine particulate matter exposure during the 2020 wildfires in the United States #MMPMID34389545
Zhou X; Josey K; Kamareddine L; Caine MC; Liu T; Mickley LJ; Cooper M; Dominici F
Sci Adv 2021[Aug]; 7 (33): ä PMID34389545show ga
The year 2020 brought unimaginable challenges in public health, with the confluence of the COVID-19 pandemic and wildfires across the western United States. Wildfires produce high levels of fine particulate matter (PM(2.5)). Recent studies reported that short-term exposure to PM(2.5) is associated with increased risk of COVID-19 cases and deaths. We acquired and linked publicly available daily data on PM(2.5), the number of COVID-19 cases and deaths, and other confounders for 92 western U.S. counties that were affected by the 2020 wildfires. We estimated the association between short-term exposure to PM(2.5) during the wildfires and the epidemiological dynamics of COVID-19 cases and deaths. We adjusted for several time-varying confounding factors (e.g., weather, seasonality, long-term trends, mobility, and population size). We found strong evidence that wildfires amplified the effect of short-term exposure to PM(2.5) on COVID-19 cases and deaths, although with substantial heterogeneity across counties.