Duke researchers put masks, face coverings to the test
https://www.wral.com/coronavirus/duk...test/19225401/
Quote:
"The mask that stood out by far is the N95, the true fitted N95 mask," Fischer said.
Fischer also said surgical masks "did a really good job."
Despite testing, the surgical mask didn’t do as well as the N95 because there are some gaps in the mask where droplets can escape. Researchers found that the two-layer cloth mask doesn’t give droplets much room to escape. However, it does not provide a tight seal like the N95.
"The cloth masks were pretty good," said Duke Dr. Eric Westman, an internal medicine physican. "They were pretty well. They blocked most of the particles."
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Once again, our resident, self-styled "experts on everything" Trumpkin idiots are proven to be know-nothings. Cloth masks do work. Mine is two layers, with a 5-layer PM2.5 filter between the cloth layers.
FWIW, I spent a week at Duke years ago. Nice university, but I hated that part of the country. Hot, humid, and the whole place seemed claustrophobic; pine trees everywhere, no mountains or anything else to see on the horizon, extremely boring place physically. Can't imagine being stuck living there.