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If you can tolerate an N95, do it. If you want to get a KN95, fine. And what the CDC has said -- and it gets misinterpreted -- but they're saying, wearing any mask is better than no mask at all, but there is a gradation of capability of preventing you from getting infected and from you transmitting it to someone else. So we should be wearing the best possible masks that we can get. That's a fact.