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The more patients with covid-19 we see, discuss with colleagues, read the experience of European and American doctors, the clearer the essence of the disease is revealed. There is an explanation for the fact that in the first stages often led doctors into stupor.
In a wave of increased attention to the Chinese coronavirus and the increased demand for medical masks and other individual respiratory protection, I decided to clarify for myself – what kind of respirators are, how they work and what they protect against. It turned out that masks have three degrees of protection: