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Written by Kate Nyhan on 2025-01-19 at 18:30

@Trenton_Hoshiko

This iteration

https://archive.cdc.gov/www_cdc_gov/coronavirus/2019-ncov/prevent-getting-sick/improving-ventilation-in-buildings.html

Is archived now, and said "Readings above 800 parts per million (ppm) suggest that you may need to bring more fresh, outdoor air into the space."

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