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Coronavirus can spread longer than 6 feet in indoor spaces with poor ventilation



As students return to school, parents and teachers become increasingly interested in work Coronavirus can spread – especially in buildings with insufficient ventilation.

John Lednicky studies viruses at the University of Florida. Lednicky told CBS News: “There is a lot of controversy over whether or not SARS-CoV-2 was transmitted over the air.

Analyzing air samples in the hospital room, Lednicky̵

7;s team discovered that the infectious virus could be spread through the air – up to 16 feet away from an infected patient – through droplets called aerosols.

“Oh, this is the smoking gun everyone asked for!” Linsey Marr, a professor of civil and environmental engineering at Virginia Tech, who studies how viruses move through the air.

Marr explains: “We are talking about a virus that exists in very small droplets, the droplets we call aerosol can travel much farther in the air and survive in magnetic air. minutes to hours at a time, ”Marr explained.

That’s important because until recently, attention was mainly focused on the respiratory transmission of the virus within 6 feet.

Aerosols can be created just by talking. A classroom simulation showed that the spread of the virus was greatly reduced by simply placing the ventilation system near a teacher.

“Once we confirm that the virus is passing through the aerosol, we can take steps to address the problem and reduce that risk,” said Marr.

© 2020 CBS Interactive Inc. All rights reserved.


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