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The study evaluates the filter efficiency of 227 types of masks sold in Brazil – 05/03/2021 – Equilíbrio e Saúde – KSU

/The study evaluates the filter efficiency of 227 types of masks sold in Brazil – 05/03/2021 – Equilíbrio e Saúde The study evaluates the filter efficiency of 227 types of masks sold in Brazil – 05/03/2021 – Equilíbrio e Saúde ksuadminMay 3, 2021 49 The new coronavirus is mainly transmitted through inhalation of droplets of saliva and respiratory secretions suspended in the air. Because of this, wearing masks and maintaining social distance are the most effective ways to prevent Covid-19 while there is no vaccine for everyone. Inexpensive, reusable and available in different colors and prints. Cloth masks are most commonly used by Brazilians. However, the ability to filter aerosol particles with a size equivalent to that of the new coronavirus can vary between 15% and 70%, according to a study at the Institute of Physics at the University of São Paulo (IF-USP).

Swasthya Sammelan | Double masking is necessary to avoid risk of COVID strain, say experts

URL copied Swasthya Sammelan | Double masking is necessary to avoid risk of COVID strain, say experts The risk of coronavirus strain is increasing significantly. Masking is a highly effective means to slow the spread of SARS-CoV-2 when combined with other protective measures, such as physical distancing, avoiding crowds and poorly ventilated indoor spaces, and good hand hygiene. It has become crucial for people to wear masks at all times. But it is becoming a bit difficult to work with a single mask amid this changing form of COVID-19, so it is necessary to have several layers of the same. Doctors during India TV s Swasthya Sammelan reveal why it is necessary to have a double layer of mask to fight this battle.

Covid-19 Mask Study Finds Layering, Material Choice Matter

Posted Today Wearing a face mask can protect yourself and others from Covid-19, but the type of material and how many fabric layers used can significantly affect exposure risk, finds a study from the Georgia Institute of Technology. The study measured the filtration efficiency of submicron particles passing through a variety of different materials. For comparison, a human hair is about 50 microns in diameter while 1 millimetre is 1,000 microns in size. “A submicron particle can stay in the air for hours and days, depending on the ventilation, so if you have a room that is not ventilated or poorly ventilated then these small particles can stay there for a very long period of time,” said Nga Lee (Sally) Ng, associate professor and Tanner Faculty Fellow in the School of Chemical and Biomolecular Engineering and the School of Earth and Atmospheric Sciences.

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