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Will one-way masking protect you from COVID in public spaces? : Goats and Soda : NPR
Clear up your patients' confusion about which masks work best
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How long does it take to catch coronavirus depending on the type of mask you 're wearing?, Society
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Effectiveness of Face Mask or Respirator Use in Indoor Public Settings for Prevention of SARS-CoV-2 Infection — California, February–December 2021