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#1 30-03-2020 07:50:53

Date d'inscription: 10-12-2019
Messages: 16

Health workers should obviously have the best possible masks

Exactly right! Health workers should obviously have the best possible masks, so homemade ones are not a great idea (even if they’re better than nothing).
What really needs to be emphasized, as the Washington Post article does, is the role that homemade masks can play in halting the spread of the virus among the general population, not by protecting the wearer of the mask from the virus, but by helping the wearer of the mask keep the virus for himself.
The Czech slogan says it best: “My mask protects you, your mask protects me”!
It’s unfortunate that the Wirecutter has not been able to clarify this. They are mixing up the health care workers specific needs with our collective responsibility to avoid the spread of the coronavirus.
Faced with a serious shortage of N95 masks, Duke Health Research and Clinical Teams have identified a method to purify masks using existing evaporated hydrogen peroxide methods so that they can be reused.
This process uses specialized equipment to atomize hydrogen peroxide, which permeates through the layers of the mask, killing bacteria, including viruses, without degrading the material of the mask. "This is a purification technique and method that we have used in biocontainment laboratories for many years," said Scott Alderman, deputy director of the Duke Regional Biocontainment Laboratory.
"We never thought of using it for things like masks." But we have now proven that it works and will begin using the technology at all three Duke Health Hospitals immediately, "said the director of the Office of Occupational and Environmental Safety Dr. Matthew Stiegel said.
During the decontamination process, Duke University Hospital, Duke Regional Hospital, and Duke Luoli Hospital should retain a considerable number of N95 masks to alleviate some shortages and curb the need to replace N95 masks with unproven decontamination technology.
In 2016, others tested the use of hydrogen peroxide to purify N95 masks and published related papers, but did not produce widespread adaptability. Earlier research did not include a fitness test after washing--basically adjusting the size of the mask for each wearer--to prove its effectiveness in the real world, and Duke has now done just that.
The purification process requires specialized equipment to atomize the hydrogen peroxide and requires a closed facility to expose the mask to steam. No toxic by-products are produced because hydrogen peroxide can be broken down into water.
Dr Cameron Wolfe, associate professor of medicine and infectious disease expert, said: "In the face of severe shortages of N95 masks, re-using these vital N95 masks will improve the hospital's ability to protect frontline health care staff." Duke University Vice President of Health Systems Monte Brown, MD, said that Duke's research team is working to promote the technology for widespread use. He said that some health systems and many pharmaceutical companies already have the equipment they need, and that these devices are currently being used in different ways, and they may increase their efforts to help local hospitals.
"We can stand in front of our staff and confidently say we are using a proven decontamination method," Brown said. This has been an effective method for many years. Although this does not solve the problem, if we and others can reuse masks once or twice, it would be a huge benefit because of the current shortage. The website: Wholesale Surgical Mask

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