A new study by researchers at the University of Minnesota College of Science and Engineering has recently demonstrated the swift indoor spread of the COVID-19. The research team has observed the transmission of COVID-19 via indoor aerosols. Indoor aerosols are expelled from the mouth while breathing or speaking. These aerosols are microparticles that are invisible and dissolve in the air for a long time due to their low weight.

Different Models of the flow

The researching team modeled the airflow in three different settings, such as classrooms, lifts, and supermarkets.

In the classroom setting, the researchers studied an asymptomatic infected lecturer who lectured in front of the entire class for 50 minutes. The virus quickly spreads throughout the room. They found that only 10% of viral particles are filtered with good ventilation. These viral particles are filtered out when an air vent is placed. When the teacher speaks directly in this air vent, very few viral particles and aerosols are spread.





What does a Reasonable setup do?

Researchers stated that air vents can be used for good classrooms and business setups. The use of the air vents in areas where there is a risk of aerosols spreading quickly makes them the less hot spots.

“After our work goes out, I think more people will ask for help because I think many businesses reopening will have this need—movie theaters, drama theaters, any place with large gatherings,” assistant professor of Suo Yang stated.

If you do a good job, there is good ventilation in the right place and if you scatter the seating area of ​​the audience well, then this area will be considered safe. The chances of viral spread in this area will be less. So a good setup can make the area safe and less vulnerable to viruses.

Broad Trials are underway

Researchers are also working with the Minnesota Orchestra to find out the mystery that how aerosols travel from one point to the other. Especially they are interesting to discover their path where different instruments are placed. The study is expected to be completed in August 2020.

Cover Image by Tumisu

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