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Thank you. From Wondery, I'm David Brown, and this is Business Wars Daily on this Thursday, January 28.

It feels like forever, but it's only been about 10 months since protective face masks became

on vogue, or legally mandated, depending on where you are.

Last April, the CDC recommended that people wear face coverings in public, and retailers

scramble to meet the demand.

Suddenly stores from Abercrombie to wedding dress outfit or beholden were stocking their shelves

with masks.

But of course, the face coverings vary widely in terms of effectiveness, from very good at stopping the spread of COVID to

pretty terrible. Medical grade N95 masks are considered the most protective. They stop around 95%

of small particles from reaching the wearer's nose and mouth.

The least effective, that would be those thin fabric buffs that people pull up around their faces.

...