Where is the highest risk of infection with the new coronavirus?
Experts who have studied how particles scatter indoors have pointed out the highest risk areas in the room for infection with the new coronavirus.
When COVID-19 superspreaders are talking, where you sit in the room matters
professor Thresh Danyala, most models of the movement of microorganisms in the air assume that the air is well mixed and the particle concentration is uniform throughout. That thing. This assumption applies to unventilated rooms and small spaces, but not to large rooms where proper ventilation can reduce the risk.
According to Clarkson University
Mr. Danyala confirmed how the new coronavirus spreads in a classroom of about 9m x about 8m used in a class of 30 people by the movement of particles.
As a result, it was confirmed that the particles reached the rear of the classroom from the source after 10 to 15 minutes, but thanks to indoor ventilation, the concentration is near the source if it is about 6 m away from the source. It was down to one tenth.
This indicates that, with proper ventilation, the risk of infection with COVID-19 may be limited to a small number of people near the infected speaker. I will.
On the other hand, the concentration of particles depends in part on the number of people in the room, the amount of particles released, and the efficiency of ventilation.
For example, in the corners of a room, less air exchange is likely, which can cause particles to remain longer. Also, if you are near the vent , suspended particles from other parts of the room will pass through, and you may be exposed to those particles.
With a proper ventilation system, 95% of the particles in the room will be replaced within 30 minutes, but of course, if there is a virus infected person, the virus will spread into the room as much as possible. It seems that the point is to be in a place where air exchange is performed and not exposed to viruses.
in Science, Posted by logc_nt