#LevelIII

I play piano every Sunday at the Rocky Mountain Care Center in Heber City, Utah, where CO₂ levels never exceed 800 ppm—a sign of decent ventilation. Yet, residents still get sick. Many attendants (& visitors) rarely wear masks when visiting rooms, and when they do, it's often ASTM LevelIII or lower
Is air filtering a useful way to reduce respiratory infections?

Does the new RCT in residential care homes show they don’t work?

Is air the new 💩?

Answers to all this and more in my new post:

How to not be completely wrong about air filters 💥
How to not be completely wrong about air filters
A new RCT of HEPA filters for residential care homes gets heads spinning
open.substack.com
November 18, 2024 at 8:17 PM