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What is the best mask for COVID-19? A mechanical engineer explains the science after 2 years of testing masks in his lab

  • Written by Christian L'Orange, Assistant Research Professor of Mechanical Engineering, Colorado State University
What is the best mask for COVID-19? A mechanical engineer explains the science after 2 years of testing masks in his labNot all masks offer the same level of protection for you and those around you.Martin Barth/EyeEm via Getty Images

The Centers for Disease Control and Prevention has changed its guidelines about masks and respirators a number of times over the past two years and gave its most recent update on Jan. 14, 2022. The update states that cloth face...

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