Health
According to scientists, these are the most effective types of fabric masks to prevent the spread of the coronavirus.
New studies show that most fabric masks are effective in preventing the spread of coronavirus.
According to a study conducted by researchers at the University of Cambridge and Northwestern University, most of the fabrics commonly used for non-clinical face masks are filtered through ultrafine particles that may contain viruses such as SARS-CoV-2. It is effective for. COVID 19.
In this study, researchers tested everything from T-shirts and socks to jeans and vacuum bags, revealing the types of masking materials that are most effective at filtering particles at high speeds. mask.
They also investigated the effectiveness of N95 and surgical masks, which are more commonly worn by medical professionals.
Although the N95 mask proved to be very effective, the reusable HEPA vacuum bag actually outperformed the N95 in some tests.
Looking at homemade masks, researchers have generally found that those made from multiple layers of cloth are most effective.
In addition, the one that incorporated the interface, which is the technique used to tighten the collar, was more effective, although it was difficult to breathe.
Researchers have also tested the effectiveness of cloth masks when wet and after washing.
They found that the cloth mask worked well while it was moist and worked well after a single wash cycle. However, researchers pointed to previous studies that found that washing masks was less effective.
Lead author Eugene O’Kelly commented: “Since the Covid-19 pandemic began, fabric masks have become a new necessity for many of us.
“In the early stages of the pandemic, when the supply of N95 masks was extremely scarce, many sewers and manufacturers began to make their own fabric masks to meet or become more affordable to meet demand that the supply chain could not meet. We offered options at a reasonable price.
“As an engineer, I wanted to know more about them, how different materials work under different conditions, and what provided the most effective fit.”
O’Kelly further talked about the effectiveness of certain materials, explaining that denim was “very effective” in blocking viral particles, but found to be difficult to breathe.
“So making a mask out of old jeans is probably not a good idea,” she added.
“The N95 mask is much easier to breathe than any fabric combination with the same level of filtration.”
Fabric masks are becoming more popular due to the shortage of N95 masks during the heyday of the pandemic.
But finding the right one is a matter of balancing what is effective and what is easy to breathe, Okelly explains.
“We want a material that is effective in filtering particles, but we also need to know that it does not pose a risk to the user of inhaling potentially harmful fibers and lint.” She said.
“In emergencies where the N95 mask is not available, as in the early days of this pandemic, fabric masks have been shown to be surprisingly effective in filtering particles that may contain viruses, even at high speeds.”
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