The evidence is pretty clear with high-risk activities and helmets. For low-risk riding (bikes etc.) it's not clear there is a huge risk to begin with--depends on the set-up.
No, delaying a literally no-risk intervention with a lot of arguments/evidence in its favor is not precaution. That's the problem. I'm for precaution when it's due. (BCG, sure). Masks are like hand-washing, you can make the same (evidence-free) increased risk argument there.
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I wasn't in the room, but I doubt the WHO had population-level evidence that cloth masks are really effective. For hand-washing, they probably did. So the two things are maybe not exactly the same. And they are certainly different to BCG.
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They had zero evidence of increased risk from mask use through any mechanism including false sense of security, and whatever they thought it applied equally well to handwashing. Rest has been litigated and science won. Almost everyone but the WHO has moved on. I'll leave it here.
End of conversation
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