KNTV NBC Nightly News With Lester Holt January 12, 2022 02:45:00
So does the kf94 mask, which is made in korea. the difference -- >> n95s have two straps that go around the head as opposed to a kn95 usually will have ear loops >> reporter: the typical medical procedure mask provides decent protection but doesn't seal tightly around the nose and mouth so you're concerned about this gap here, right? you want it completely tightly sealed >> that's correct. and you will know if it's not sealed if your glasses fog up. >> reporter: in short supply two years ago, the cdc recommended against using n95s for the general public now with plenty available, they're the b...
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