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How to help yourself in the face of coronavirus? What is COVID-19?

There are three main ways of transmission, direct transmission, aerosol transmission and contact transmission. Direct transmission refers to the infection caused by the patient’s sneezing, coughing, and talking droplets. The exhaled gas is directly inhaled due to close inhalation; in general, the droplets are transmitted 1-23 meters away from the speaker. Aerosol transmission refers to the mixing […]

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