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Davos #DavosSafe The other adage, "ethics is what you do when no one is watching" applies. All these attendees, at least a portion who are anti-NPI in their home countries, surrounded in layers of passive protection.
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It's a similar to infectious disease MD's fascination with surgical masks. A part of resistance to real respirators is familiarity, as "I've worn a surgical mask 25 years and never got sick." Yes, but you're in a health facility with the best ventilation codes provide for.
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When you assess the effectiveness of a mitigation, you need to consider all the other mitigations functioning simultaneously. Assuming surgical masks work b/c of hospital experience doesn't consider that a crowded pub may have less than 1/5 the air exchange as that hospital.
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