Straight Talk About Masks and Coronavirus Prevention
A security personnel sprays disinfectant on a bus in New Delhi, on March 22, 2020. (Photographer: Prashanth Vishwanathan/Bloomberg)

Straight Talk About Masks and Coronavirus Prevention

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(Bloomberg Opinion) -- A procedural mask loosely covers the mouth and nose of the wearer and has straps that go over the ears. The term is often used interchangeably with “surgical mask,” but among...
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