Coronavirus masks: What's the difference between N95 and KN95?

Health care workers are prepared to protect themselves with Chinese-manufactured KN95 masks if faced with continued N95 respirator shortages, leading to the question: What is the difference between the two coverings, and are KN95s OK to use? The family of Patriots owner Robert Kraft donated some 1 million masks to health care workers in Massachusetts […]

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Pictures: What's the difference between N95 and KN95 masks?

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