Posted on 04/06/2020 1:34:55 PM PDT by aimhigh
Both surgical and cotton masks were found to be ineffective for preventing the dissemination of SARS-CoV-2 from the coughs of patients with COVID-19. A study conducted at two hospitals in Seoul, South Korea, found that when COVID-19 patients coughed into either type of mask, droplets of virus were released to the environment and external mask surface. A brief research report is published in Annals of Internal Medicine.
During respiratory viral infection, face masks are thought to prevent transmission, leading health care experts to recommend their use during the COVID-19 pandemic. With a shortage of both N95 and surgical masks, which have been shown to prevent the spread of influenza virus, cotton masks have gained interest as a substitute. However, it is not known if surgical or cotton masks worn by patients with COVID-19 prevent contamination of the environment.
Researchers from Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea instructed 4 patients with COVID-19 to cough 5 times each onto a petri dish while wearing the following sequence of masks: no mask, surgical mask, cotton mask, and again with no mask. Mask surfaces were swabbed with aseptic Dacron swabs in the following sequence: outer surface of surgical mask, inner surface of surgical mask, outer surface of cotton mask, and inner surface of cotton mask. The researchers found SARS COV-2 on all surfaces. These findings suggest that recommendations to wear face masks to prevent the spread of COVID-19 may not be effective.
“Bingo! Even N95 allow 5% of it through.”
I did some demo on my house this past year and I can say they helped but I was still cleaning my system out for a few days after.
I laughed a couple of weeks ago when people were hoarding masks and all I could think was I hope they get a higher grade than what I used. Cleaning out the barn I found the box of masks, all N95.
If a mask will reduce the transmission by just 2%, I’ll take it over nothing.
lol
By the end of the quarantines, God knows what posts will be going up :)
These things are not 100% effective, but they are better than slobbering all over each other.
Something about holding a gun to their head....but I don’t understand where the Lysol comes into play? Lol.
Very funny.
This seems to point up the issue with the masks themselves and how they are handled and contained. Reuse, even once without thoroughly disinfecting, is not a good idea. I see far too many people in the stores touchy their faces and masks. That itself is probably worse because of the likely concentration of any viruses on the external side of the masks.
L to the O to the friggin’ L
How far away were the petri dishes? The original paper does not say. If they are one foot away, it's no surprise they got infected.
A mask can probably stop a 100 mph sneeze from sending aerosols 30 feet. Maybe they attenuate the sneeze and limit the trajectory and distance to 2 or 3 feet. If so, that would be valuable.
This strikes me as not very useful research. They should have put petri dishes at 1 foot intervals to 6 feet, then 2 foot intervals the next 6 feet, then 5 foot intervals out to 30 feet.
Wear two of the surgical masks at once.
0.02 Microns (size of Covid-19)]
4H group has been sewing masks, keeps them busy, feeling productive, helpful.
Don’t tell them they are for nothing. It will do something.
Tommy the Commie can go F herself .. power drunk stalinist wannabe
My disgust is boundless for that pos AND for the bunch of gutless ‘legislator’ pussies peeing their panties in H’burg rather than challenging this one size fits all bullshite.
There’s a damned good reason I live out in the boonies rather than anywhere near our urban shiteholes, and this fustercluck only proves the point.
/valid rant
LOL!........................
Mark
It's in the excerpt.
So I guess folks should not bother coughing or sneezing into a tissue or their elbow since virus would nevertheless land on a petri dish placed in the path of the cough or sneeze.
No HOT SAUCE?
Did they assay the amount of virus that was recovered with each type of filtration?
The dose probably makes a difference.
I don’t have one. Where the heck are they available?
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