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> If you go to a Canadian hospital wearing an N95 these days there's a good chance they will insist you to take it off in favour of a "clean" surgical mask with gaps around the sides and nose.

Happened to me many times. Sometimes they let me wear it over my (certified) N95, sometimes they don't.

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I am so confused… how do they think covid spreads, then? Why should you wear a surgical at all, then?

The sign I saw at a hospital in Toronto said no fabric masks, only surgical. It’s probably about uniform coverage not overall efficiency, a compromise of most big central systems.

My corner flower shop has a sign saying surgical or FFP2, just like most shops I’ve seen in my area of Germany. If they can manage it, so should a hospital.

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