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A comment on Ask HN: Is drawing a friendly face or picture on my N95 masks safe?. Parent comment
It's being widely used around infected patients all over the world.
It seems to me that if it wasn't effective we should have seen a very big increase of positive cases in the population of health care providers.
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It's being widely used around infected patients all over the world.
It seems to me that if it wasn't effective we should have seen a very big increase of positive cases in the population of health care providers.