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Experts: Wearing a surgical mask with an additional layer of cloth prevents 90% of Corona infection

Experts say that wearing 3 layers of face coverings, such as a surgical mask, with an additional layer of cloth, prevents 90% of the infectious particles of the Corona virus.

According to the British newspaper "Daily Mail", some experts, such as Dr. Anthony Fauci, an infectious disease expert in the United States, supported the double mask to protect against corona, explaining that wearing more than one mask can make breathing more difficult and increase the risk of tampering with one of the covers The face, instead, experts say the best masks have two tightly woven layers of an external material with a substance in between, like a vacuum bag.

And a study from a Virginia university found that the three-layer masks block at least 90% of infectious particles, public health experts say, this does not mean wearing 3 masks at one time, multiple masks may provide some measure of protection from the Corona virus, which makes More difficult breathing.

Instead, infectious disease specialists recommend wearing a single, multi-layer mask that fits your nose and mouth, or a surgical mask with an extra layer of cloth, the newspaper said.

One study found that triple-layer masks can block at least 90 percent of potentially infectious drops and reduce your risk of contracting the disease.

In a recent interview, Dr. Anthony Fauci, USA's chief infectious disease expert, endorsed the use of the double mask.

"If you have a one-layer mask, you put another layer on it, then it stands to reason that it would probably be more effective," Fauci said.

But Dr. William Schaffner, professor of infectious diseases at Vanderbilt University Medical Center, said that the double and triple mask is not necessarily for anyone, explaining that a high-quality mask has the same effectiveness as wearing two masks.

He added: "There is no doubt that the thicker the mask, it is generally believed that it will be more effective in sorting viral particles, basically, the thicker it is, the greater its effect in blocking virus particles from entering you and infecting you."

In November 2020, Dr.Lensie Marr, an expert in virus transmission at Virginia Tech, and her colleagues tested 11 different masking agents to test their effectiveness in filtering materials, and found that a mask consisting of a thicker fabric worked better, with an efficacy of 96%, while The thin face shield performs the worst, providing little or no protection.

Based on these results, the authors write, we recommend a three-layer mask consisting of an outer layers of elastic and tightly knit fabric and an inner layer consisting of material designed to filter out particles.

This means that the best masks, they note, have two tightly woven layers of outer material with a filter material in between.

For example, you can use a fabric like cotton or microfiber for the outer layers and a piece of vacuum bag for the inner layer, as such a three-layer mask can block 75% of small particles and at least 90% of the larger ones.