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#1 31-03-2020 02:45:54

Nouveau membre
Date d'inscription: 11-12-2019
Messages: 1

As health care workers struggle with the lack of masks

As health care workers struggle with the lack of masks, artisans and other social reformers are racing to sew fabric masks to raise donations. It seems incredible that the richest countries in the world may need to resort to DIY masks, but the US Department of Health and Human Services estimates that 3.5 billion masks and coronaviruses will be available in one year, and our national reserve is only 1%. So, should you dust off the sewing machine and start making masks? We consulted the Centers for Disease Control and Prevention and the Minnesota Hospital Network to find out.

Are homemade cloth masks effective for preventing coronavirus?

In short, no. Homemade masks can be almost useless against viruses.
For medical staff who use covid19 to treat patients, the N95 mask is recommended because it can capture at least 95% of particles (minimum 0.3 microns) and form a seal on the wearer's nose and mouth. Simple surgical masks are designed to stop splashes and droplets and prevent patients from spreading bacteria to others, but they do not produce a sealing effect and are far less effective than N95 masks in protecting medical personnel from viral infections. The protective effect of homemade cloth masks is not even as good as surgical masks. But in extreme cases, if there are no masks, the CDC says it can use homemade masks with other protective equipment.

U.S. Centers for Disease Control and Prevention spokesman Arleen Porcell said in an e-mailed statement: "Homemade masks are not personal protective equipment (PPEs called by health care professionals), but only when there are no respirators or masks, Protective equipment (such as masks) can only be used together. "" It is worth noting that this strategy is considered a last resort and does not meet the typical standards of care in the United States, but also acknowledges the cruel reality. "

SARS-CoV-2 is so new that we have not directly studied the effectiveness of different protective equipment. However, a 2015 study in Vietnam found that hospital medical staff wearing cloth masks are more susceptible to respiratory and flu-like illnesses than people wearing disposable surgical masks. Cloth masks blocked only 3% of particulate matter, and medical masks blocked 56%. A 2013 study (PDF) from Cambridge University looked at how aerosolized bacteria and viruses are transmitted through homemade mask materials implanted in test equipment. The study showed that only a vacuum cleaner bag can match an antiviral capability of medical masks; among cloth masks, tea towels can block the highest proportion of viruses.

Why do some hospitals require homemade masks?

Part of the reason is that some hospitals ask for masks because they don't want to turn down those who seek to help the community fight the corona virus. The hospital says they can use the masks for patients and health care workers who do not have access to covid19, retaining more protective equipment for high-risk situations.

"We fulfilled the community's desire to help and do something," said nurse Helen Strike. She is the covid19 system accident commander for Allina Health, a network of 13 hospitals and dozens of clinics in the Minneapolis area.

Strike said that if the number of cases in Minnesota surges, the hospital network will consider using homemade masks for patients without COVID-19. For example, according to Stryker, people with coughs unrelated to COVID-19 can use a mask to preserve saliva. In extremely low-risk situations, health care workers can also use masks in combination with face masks or goggles. This will keep N95 respirators for health care workers who are directly handling 19 covid cases. " The website: https://www.maskwholesales.com

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