Wholesale face masks covid exporter from Vietnam One category of evidence comes from laboratory studies of respiratory droplets and the ability of various masks to block them. An experiment using high-speed video found that hundreds of droplets ranging from 20 to 500 micrometers were generated when saying a simple phrase, but that nearly all these droplets were blocked when the mouth was covered by a damp washcloth. Another study of people who had influenza or the common cold found that wearing a surgical mask significantly reduced the amount of these respiratory viruses emitted in droplets and aerosols.
A facemask can be used to make a fashion statement. The standard protective masks are, of course, a standard white or blue. However, if you’re not in a situation in which you are providing healthcare services, but just need to cover up while out in public, there’s no end to the possibilities for exotic prints, bright colors, and various glamorous add-ons (think sequins). If you’ve mastered the art of constructing your own, you don’t have to worry about using a practical material, because you can make new ones rather than having to wash them so frequently. Your creation may even become the source of “mask envy” in people who marvel at your ingenuity.
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“If that chain is cut anywhere, then the virus is no longer able to propagate or to be transmitted,” Waldman says. “So whether you intervene on the side of the transmitter or the side of the receiver of viral transmission, if you can block the passage of the virus on either end of that chain, then everyone benefits from that.” A few studies highlight the power of widespread community use of face coverings. A report published in Health Affairs, for example, found that states with face mask mandates had a greater decline in daily COVID-19 growth rates compared with states that did not issue mandates. The authors estimate that these mask policies may have prevented as many as 450,000 coronavirus cases in the U.S.
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