I have been a bit baffled by the messaging on mask wearing in the US. No, surgical masks are not 100% effective, but neither is 6 ft distance, washing your hands when you get home, etc. The main benefit for the general population is to prevent spread from asymptomatic people. <a href="https://twitter.com/zeynep/status/1240269572781072384">https://twitter.com/zeynep/status/1240269572781072384</a>

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Kelsey Jordahl

@kajord

I have been a bit baffled by the messaging on mask wearing in the US. No, surgical masks are not 100% effective, but neither is 6 ft distance, washing your hands when you get home, etc. The main benefit for the general population is to prevent spread from asymptomatic people. https://twitter.com/zeynep/status/1240269572781072384

3/23/2020, 8:43:03 AM

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Kelsey Jordahl

@kajord

Of course, people without a professional need for surgical masks should not be taking supply from those who really need them, but that is a supply chain problem, not because they wouldn't be useful. They're just not as *critical*.

3/23/2020, 8:46:35 AM

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Kelsey Jordahl

@kajord

Homemade masks can work pretty well! And there are some patterns available out there to make your own.
https://twitter.com/CMichaelGibson/status/1239718351573843973

3/23/2020, 8:48:53 AM

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