Public health officials recommend the N95 masks should be worn by frontline medical workers. But if you're going to buy a regular mask or make your own out of cloth, what's the best material for protecting yourself and those around you?According to researchers, the filtration efficiencies of hybrids, such as cotton-silk and cotton-flannel, were more than 80 percent for particles smaller than 300 nanometers and more than 90 percent for particles larger than 300 nanometers. A nanometer equals one billionth of one meter.
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