Short thread:
Are face shields better than masks?
Are they more effective against Covid-19?
Are they easier and more sociable to wear? (Here's how they look in comparison on me.)
Are face shields better than masks?
Are they more effective against Covid-19?
Are they easier and more sociable to wear? (Here's how they look in comparison on me.)
If you know of extensive research on the medical effectiveness of face shields vs. masks, please link it here.
What I could find easily suggests that face shields are really good, probably better than most masks. One such report:
self.com/story/face-shi…
What I could find easily suggests that face shields are really good, probably better than most masks. One such report:
self.com/story/face-shi…
In terms of sociability, the face shield is a huge improvement over masks. Your face--your smile-- is fully visible instead of concealed like a bandit. Lip readers can read you.
You can put it on and off like a hat.
Mine from Amazon--2 for $25
smile.amazon.com/gp/product/B08…
You can put it on and off like a hat.
Mine from Amazon--2 for $25
smile.amazon.com/gp/product/B08…
The face shield can be infinitely re-used--just clean the plastic.
Your voice doesn't sound muffled.
Off your face it lies flat or stores easily on a hook.
A lot of models are available. The KlearStand I got is simple and clever in its design.
What do other users here say? /
Your voice doesn't sound muffled.
Off your face it lies flat or stores easily on a hook.
A lot of models are available. The KlearStand I got is simple and clever in its design.
What do other users here say? /
I should add: Covid infection CAN get in through your eyes. Most masks offer no eye protection; a face shield protects eyes completely. And it fits over glasses fine.
Another postscript: breathing is FAR easier in the shield than any mask I've tried.
The best paper on this I've now seen -- face shields appear to be better than masks, including on aerosols. (Thanks to John @markoff)
April 29, 2020 - "Moving Personal Protective Equipment Into the Community: Face Shields and Containment of COVID-19"
jamanetwork.com/journals/jama/…
April 29, 2020 - "Moving Personal Protective Equipment Into the Community: Face Shields and Containment of COVID-19"
jamanetwork.com/journals/jama/…
Question on aerosols (tiny floating droplets) vs. larger "ballistic" droplets and their comparative viral load. (It's said it takes about 1,000 viral particles to cause an infection.)
What's the comparative viral load of aerosol vs. ballistic droplets?
Re face shields...
What's the comparative viral load of aerosol vs. ballistic droplets?
Re face shields...
Face shields really stop the larger ballistic droplets, in both directions. But some smaller aerosol droplets can float through on the sides and bottom of a face shield.
How big a problem is that, in terms of viral load?
Is there any research yet on this?
How big a problem is that, in terms of viral load?
Is there any research yet on this?
This guy says aerosols may not infect by themselves:
