Barely Significant
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Effect of environmental pollutants PM-2.5, carbon monoxide, and ozone on the incidence and mortality of SARS-COV-2 infection in ten wildfire affected counties in California.

Sci Total Environ · 2021 · PMC7685934 · PMID 33321340

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an increasing trendno p-value reported
An increasing trend was observed in the Creek area where the number of cases and deaths had a positive relationship with PM2.5, O 3 and CO.

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