While in many countries public areas were required to wear a mask against the coronavirus epidemic, the use of double masks has become an increasingly common practice with the mutation of the virus.
The US Center for Disease Control and Prevention (CDC) published a study this week on the use of double masks.
The research showed that if a second layer, such as a piece of cloth, is attached to disposable masks, such as the blue one, the amount of particles that are blocked to pass increase.
also experts in Turkey, especially at a time when seeing the new variant was found to be higher than the rate of infection, in addition to social distance is expressed can provide an effective protection of the couples mask use.
What findings were obtained in the CDC study?
Within the scope of the research published by CDC, one of the two artificial heads that can breathe was worn with a single mask and the other with a double mask.
Covid-19 particles were sprayed from both about two meters away.
In the examination, it was found that the single mask prevented 40 percent of the particles, while it was found that this rate increased to 80 percent when the double mask was worn.
However, it was also noted that the study was conducted using a single cloth mask worn over a blue surgical mask, and therefore did not include findings on other methods used to cover the mouth and nose.
In addition, in the research of the CDC, it was stated that the number of masks as well as the way of wearing the mask was effective in its protection.
CDC Director Rochelle Walensky said, “In the study, we found that wearing a mask was significantly better than not at all. And well-fitting masks worked best at blocking aerosols,” said.
“We continue to recommend that masks have two or more layers, cover the nose and mouth completely, and fit snugly to the sides of the nose and face.”
How effective is knotting the edges of the mask?
In the CDC research, it was stated that the “knotting” of the edges of the masks, as well as the double mask, plays an important role in the passage of particles.
According to the researchers, by knotting the rubber of the mask close to the fabric before wearing it, eliminating the gaps that may occur on the edges also helps to improve the overall performance of the masks.
The researchers stated that this method reduces the leakage of particles from both sides of the procedure and reduces the likelihood of infection.
According to the research, a mask tied on both sides prevents 63 percent of the particles from passing through.
This rate decreases to 42 percent in non-knotted masks.
in Turkey experts recommend what?
Turkey is also a time in a practice commonly referred to as double-fitting mask.
The use of double masks has also increased with the emergence of the new variant, which was first detected in the UK and found to spread faster.
Scientific Committee Member Prof. Dr. Ateş Kara said that due to the mutated virus, special attention should be paid to social distance and double masks should be worn indoors.
Kara said in his assessment to DHA in the past weeks, “If our distance was 1 meter before, now it is at least 1.5 meters, let’s say our stopping time before, 10 minutes, now we have to reduce it to 2-3 minutes. But especially we are in a closed environment, “We are in an environment with less ventilation and if the time will be a little longer, then we can make two masks for the number of masks, or choose the mask that can hold even the particles in the air with a tighter filter feature recommended by Germany.”
A similar assessment was made by another Scientific Committee Member Prof. Dr. It came from Tevfik Özlü.
Noting that the mutation of the virus spreads faster, Özlü said that under these conditions, the masks should be changed more frequently.
Özlü said, “The use of double masks is on the agenda, but if you use your mask properly and everyone around you is also masked, one mask will protect you to a great extent.
Which masks are suitable for double wearing?
In some countries, scientists are recommending the use of two masks previously, or more effective masks such as N95, FFP2 or KN95, in the face of the new most infectious variants of the coronavirus.
However, experts underline that not every mask is suitable for double use.
The CDC states that two disposable masks should not be worn on top of each other.
The CDC warns, “Disposable masks are not designed to fit perfectly, and wearing more than one mask will not improve this situation either.”
In addition, the latter should not be placed on the masks of the N95, FFP and KN95 types. These masks provide the highest level of protection if worn alone.
Other recommendations include wearing masks that fit snugly on the nose and do not have any openings at the top.
Source: Cumhuriyet Gazetesi – Güncel by www.cumhuriyet.com.tr.
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