Macalester did a systematic audit of ventilation across campus and made HVAC adjustments across campus to improve filtration, increase ACH, etc etc, in response to the possibility that COVID is airborne…in summer 2020.
Not 2021. In 2020. Before aerosol transmission was clearly established. Before the WHO and the CDC were even admitting COVID could travel more than 6 feet. Summer of 2020.
And apparently improved ventilation is still in effect now.
Don’t tell me better isn’t possible.
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