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A video released by researchers in Finland shows how easily a coronavirus cough could pass through the air indoors and infect others.
The UK is currently in its third week of stringent blocking measures in an attempt to combat the spread of Covid-19.
Social distancing rules are in effect, but the video shows how the virus could still remain in the air for ‘several minutes’.
(Image: Aalto University)
Researchers from Aalto University created the 3D model to observe how small respiratory particles are transported in the air after coughing, sneezing and talking.
The animation shows a person coughing in a grocery store aisle, before the particles quickly spread to other store aisles.
The researchers modeled the movement in the air of aerosol particles less than 20 microns.
For a dry cough, which is a typical symptom of today’s coronavirus, the particle size is typically less than 15 microns.
The researchers added that extremely small particles of this size do not sink to the floor, but move along the air currents or remain floating in the same place.
Aalto University assistant professor Ville Vuorinen said: “Someone infected with the coronavirus can cough and walk away, but then leaves extremely small aerosol particles that carry the coronavirus. These particles could end up in the respiratory tract of other people nearby. .
Jussi Sane, Chief Specialist at the Finnish Institute of Health and Welfare added: “Stay home if you are not feeling well and keep a physical distance from everyone. Instructions also include coughing on the sleeve or handkerchief and taking good hygiene of the hands”.
For the latest tips on how to protect yourself and others from the coronavirus, visit the World Health Organization website.
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