The filter works by trapping neutral particles like bacteria and viruses before they pass through the mask, protecting the wearer and those around them. It's similar to how socks might get stuck to a blanket in the dryer. The N95 mask, which costs roughly $5, also fits securely to the face, eliminating most of the leakage that may occur with a loose-fitting cloth or paper mask.
"If for four weeks the country essentially wore these masks in those risky settings like that indoors, what kind of difference do you think it would make?" Gupta asked.The quality of protection a face mask can provide is crucial. A respiratory illness like the coronavirus is transmitted through aerosols, tiny particles that waft and hang in the air.
The biggest problem is lack of supply. This week marked a full year of the coronavirus, and the Biden administration has committed to invoking the Defense Production Act more often to boost manufacture of N95 masks and other critical supplies. Experts hope manufacturing will hit a speed to be able to sufficiently supply the population.
Short in supply though
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