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Three ways to prevent Covid-19 from spreading
DROPLET SPREAD
AEROSOL SPREAD
CONTACT SPREAD
Sneezing, coughing, talking droplets, close contact...
Droplets mix in the air to form aerosol, causes infection after inhalation
Infection after physical contact
"Wash hands & ventilate frequently, avoid crowded places, air disinfection and purification are the most useful ways to keep healthy."
Prof. Cao Bin, expert from the China Academy of Science
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