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NEW STUDY CONFIRMS CONSENSUS THAT MASKS PROTECT THE WEARER AND OTHERS. Virginia Tech research team Linsey Marr (front), Charbel Harb (left) and Jin Pan. Image: Virginia Tech. ace masks are widely considered by infectious disease experts to be a key layer of protection against catching or spreading SARS-CoV-2, the virus that causes Covid-19. A new study confirms this consensus and provides helpful details for buying or making a mask. Well-fitting masks can easily trap 50% or more of infectio s particles, according to a series of lab tests led by Linsey Marr, PhD, an aerosol expert at Virginia Tech. Masks made of two or three layers of cotton and other filtering materials can capture up to 90... Full story

24 November