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USA: Sars-CoV-2 association with PM2.5 particles during wildfire smoke events

America, Coronavirus, Health, Infection, Nevada, Pollution, Science, Transmission, USA

We found that a 10 µg/m3 increase in the 7-day average PM2.5 concentration was associated with a 6.3% relative increase in the SARS-CoV-2 test positivity rate, with a 95% confidence interval (CI) of 2.5 to 10.3%. This corresponded to an estimated 17.7% (CI: 14.4–20.1%) increase in the number of cases during the time period most affected by wildfire smoke, from 16 Aug to 10 Oct 2020. article



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