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, found a new 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.

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Chinese health leader admits country's COVID-19 vaccines have low effectiveness

This photo taken on April 10, 2021 shows a man receiving a vaccine against the Covid-19 coronavirus in Nanjing, in China's eastern Jiangsu province.

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Vaccinated Indian national among 20 new Covid-19 cases reported in Singapore

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Covid 'health emergency' in state: Gujarat High Court initiates suo motu PIL

Also Read | The silent rise of India’s private portsThe chief justice informed the registry to make the Gujarat government, its health department as well as the central government parties in the fresh Public Interest Litigation (PIL).The PIL will be heard on Monday by the division bench comprising Chief Justice Vikram Nath and Justice Bhargav D Karia at Nath's official residence through online mode.The chief justice said that "news channels are flooded with the harrowing tales, unfortunate and unimaginable difficulties and unmanageable conditions of the infrastructure".Citing these media reports, he noted that there exists a "shortfall or deficit of not only testing, beds and ICU, but also supply of oxygen and basic medicines like

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Middleton, Portis lead Bucks past slumping Magic 124-87

ORLANDO, Fla. – Khris Middleton scored 21 points, Bobby Portis added 16 points, including four 3-pointers, and 10 rebounds off the bench and the Milwaukee Bucks defeated the Orlando Magic 124-87 on Sunday night to end a three-game losing streak.

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United States	Cases: 46 252 513 Deaths: 750 423 Recovered: 0
India	Cases: 34 321 025 Deaths: 459 652 Recovered: 0
Brazil	Cases: 21 835 785 Deaths: 608 235 Recovered: 0
United Kingdom	Cases: 9 215 683 Deaths: 141 607 Recovered: 0
Russia	Cases: 8 494 589 Deaths: 237 619 Recovered: 0

Study on Covid-19 mask finds layering, material choice matter

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