Persistent cough makes face masks ineffective

24 June 2020, 09:28 | Health
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The coronavirus pandemic will not leave humanity alone for a while.

While we do not have effective treatments or vaccines, we have to rely on prevention methods.

These include frequent hand washing, maintaining a social distance of one and a half to two meters and wearing face masks.

Researchers say that if a person coughs steadily, then a face mask loses its effectiveness, and viral particles calmly sneak out, where they can infect others.

Masks slow down the spread of coronavirus, but their filtering efficiency decreases dramatically due to persistent coughing. Scientists at the University of Nicosia in Cyprus believe that masks reduce the release of aerosol particles with the virus due to repeated coughing attacks.

However, it remains unclear which droplets pose the greatest threat in terms of infection - large or small. To answer this question, scientists used a computer model that traced the movement of the smallest particles..



She showed that masks reduce the transmission of the virus by airborne droplets, but their effectiveness is reduced due to repeated coughing, which manifests itself in a sick person.

Even if an infected person wears a mask, some drops may cover a distance of one meter with a mild cough.. Without a mask, this distance is doubled, so the masks still help.

They also reduce the amount of aerosol particles that enter the air from under the mask, but not by 100%, writes The Health Site.

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