Wear this mask could be worse than no mask, says study

If a mask is dirty, it can not filter these tiny droplets.


Wear a face mask is one of the fundamental tools we have in preventing the propagation ofCOVID-19 [Feminine. Over the past year, researchers are studying protection coatings, which are trying to understand, which are more efficient to filter the virus particles, examining both medical quality masks as well as tissues. Now that a new study warns that there is a type of mask that could be less effective than keeping the virus at the bay, then wearing any mask at all: a mask used. Read to hear why and to ensure your health and health of others, do not miss theseWithout signs that you have already had coronavirus.

Never wear a used mask, says study

A study published Tuesday in the Fluid physicsled by researchers from the University of Massachusetts Baptiste Lowell University and California found thatThe three-layer average surgical mask is 65% efficient in air particle filtering - when it is new at least. Once used and REWORN, the number falls to 25%. They believe that it has to do with the fact that the masks slow down the flow of air, which can make people more likely to breathe particles. If a mask is dirty, it can not filter these tiny droplets.

"It is natural to think that wearing a mask, it does not matter new or old, should always be better than nothing. Our results show that this belief is true only for particles greater than 5 micrometers, but not for lower fine particles at 2.5 micrometers, "the author Jinxiang XI explained in an accompanimentPress release.

By using a computer modeling system, they examined how the three-layer surgical mask affected the airflow and how the particles crossed. In addition, they watched how and where they landed on the face and inside the nose, pharynx or deep lung.

While wearing an airflow "slows considerably", they found that "the protective efficacy of a mask for the nasal respiratory tract decreases in lower inhalation rates", by the study.

They hope that their conclusions will encourage health leaders to consider more effective strategies for the wearing of the mask.

"We hope that the public health authorities reinforce current preventive measures for the transmission of CVIV-19 transmission, such as the choice of a more efficient mask, bringing it correctly for the highest protection and avoid using a Excessively used or expired surgical mask, "said XI.

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How to survive this pandemic

As for yourself, follow the fundamental principles and help put an end to this thrust, no matter where you live-wear cleaning facial mask, the social distance, avoid big crowds, do not go inside with people that you do not go with (especially in the bars), practice good hand hygiene and protect your life and the lives of others , and do not visit these 35 places you are most likely to catch Covid.


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