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How to Choose the Right Face Mask

RF - Business people wearing face mask walking in street
Photographer: Maskot/Maskot

Here’s the latest news from the pandemic.

In this week's edition of the Covid Q&A, we look at how to choose the right mask. In hopes of making this very confusing time just a little less so, each week Bloomberg Prognosis is picking one question sent in by readers and putting it to experts in the field. This week's question comes to us from Robert. He asks: