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The Conversation USA

The CDC now recommends wearing a mask in some cases – a physician explains why and when to wear one

  • Written by Thomas Perls, Professor of Medicine, Boston University
The change in CDC guidance comes in response to new research on how the new coronavirus can spread. Peter Denovo/Shutterstock.com

The Centers for Disease Control and Prevention has changed its policy and is now advising everyone, whether or not they have symptoms of COVID-19, to cover their face with a mask or cloth covering whenever social...

Read more: The CDC now recommends wearing a mask in some cases – a physician explains why and when to wear one

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