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