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Studies have found that this mask is actually worse than no mask



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In the past few months, covering the nose and mouth can help reduce the number of coronavirus cases has become more widely accepted, but experts have warned time and time again that all coverings are different. Recently, professors at Duke University have developed an easy-to-replicate test to measure the effectiveness of different types of masks and face coverings in preventing the discharge of respiratory droplets that may contain coronavirus particles. A certain type of facial mask scores so low that it is actually worse than not wearing a mask at all: Researchers have found that when it comes to droplets, your fleece is not effective against COVID.

According to reports Fast company, Duke University professors have developed a testing mechanism (they say it can be cheaply established by other laboratories and/or companies that produce masks), when they want to donate masks to people in need and donate a That would actually protect. Eric WestmanDoctor of Medicine, School of Medicine Martin FischerPhD PhD from the Department of Chemistry used a black box, a laser, and a mobile phone camera to conduct a test to visualize the pattern of breath droplets.

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The research results are published in Scientific progressExplain that the mask is tested by the wearer, who then says the same phrase in the box the same number of times. Due to the light provided by the laser, the droplets are visible. “Simple computer algorithm [was] Used to read the droplets in the video. “The paper read and provided data so that researchers can rank the effectiveness of masks.

The researchers tested 1

4 different mask types and a pack of mask materials. Not surprisingly, as worn by medical staff, suitable N95 masks are the most effective in destroying liquid droplets, followed by surgical masks and poly-cotton hybrid masks. The handmade cotton version is further down. The last one on the list-not even a mask at all-is wool. Sometimes called a neck guard, it is an item usually worn by runners or people who participate in other outdoor sports and activities to keep warm. It can be worn on the neck or pulled on the face.

R gear neck protector
R-Gear / RoadRunner sports

However, the neck leggings are not designed to prevent the spread of water droplets. As these researchers have discovered, it is terrible. Shaking with wool is more than talking without one. This may be because the material of the leggings actually diffuses the droplets, resulting in more smaller droplets. Fischer said: “Of course, what causes this problem is that in fact, smaller particles may actually be more likely to be carried away by the air than large particles that fall on the floor.” Fast company.

Although public health agencies have issued conflicting comments on whether airborne transmission is a serious COVID risk, many experts believe this is a major problem. There is evidence that infection not only occurs in direct person-to-person contact (ie, someone who has a COVID cough on your face), but it can also occur through atomized droplets remaining in the air. For this reason, researchers at Duke University believe that the droplets produced by talking (or coughing, sneezing, singing, etc.) through the neck fluff may be more dangerous than the droplets produced by not covering the face.

Therefore, although these products may make you feel more comfortable during many winter jogging, they are not suitable for COVID protection. Insist on using other forms of masks and don’t leggings for now. Learn to say that if you want to get more ways to choose the right method, please check if your mask does not have two of them, that is, it does not work.


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