Clinical masks versus N95 respirators to stop COVID-19 among healthcare workers

As promised, the 2022 release saw a trio of contentious guidance related to COVID-19.

The first thing is something that always causes a stir: check out the skins! Taking a look at masks in the COVID-19 era is like poking

a hornet's nest with a stick, and this one is no exception.

But let's poke around! In addition to raising some interest when it first appeared online

 it offers us the opportunity to test some exciting principles of medical research.

Does wearing a medical mask while caring for someone with confirmed or suspected COVID-19 provide health care workers

That term "non-inferior" is often puzzling, so it's nice to translate it into plain English

which is what Harvard biostatistician Michael Hughes kindly did for me a few years ago. 

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