San Antonio Express-News: San Antonio-based Southwest Research Institute finds ‘counterfeit’ masks among hospital supplies of coronavirus gear

San Antonio Express-News: San Antonio-based Southwest Research Institute finds ‘counterfeit’ masks among hospital supplies of coronavirus gear. “More than two-thirds of KN95 respirator masks tested by Southwest Research Institute failed to meet U.S. filtration standards. KN95 masks are manufactured in China and look similar to the gold-standard N95 masks used by health care providers to protect against the contagious novel coronavirus. But KN95 masks sold in the United States have not gone through the same certification process as N95 masks.”

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