Choosing a seat on the bus may increase or decrease the risk of SARS-CoV-2 infection. Such a study was conducted by scientists from IBM Research Europe. Where is the safest place?
- There are many factors that influence the risk of infection in the mass media
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Place on the bus and the risk of COVID-19 infection
Can choosing to seat on a bus affect the risk of coronavirus infection? It turns out that it is. Scientists from IBM Research Europe studied it. The results of their research were published in the journal Physics of Fluids.
The study model included factors such as air and droplet dynamics, evaporation, and the effects of ventilation systems. According to the researchers, middle seats should be avoided in the first place.
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Researchers designed a simulation vehicle using an array of 3 to 3 passengers in infinite rows in a rectangular space. They then examined the places in the row to see where there was the greatest risk of transmission of the virus.
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‘By visualizing the droplets and their flow, you become aware of how many unnoticed physical phenomena occur around us, such as the complex interactions between the droplet streaks, exhalation and ventilation,’ said study author Carlos Peña-Monferrer. – These are the elements that make it difficult to prevent the risk of infection.
Where is the safest place?
The team found that air droplets emitted by the passengers seated at the window flew farther up the vehicle and thus attacked the other passengers’ space to a lesser extent. Predictably, the middle seat has the highest risk of transmitting infection.
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The least exposed seat of all was the aisle seat, because this is where the ventilation system collects the emitted droplets most effectively. The droplets released from the passage site were filtered out immediately.
The team recreated conditions that better reflect the diversity of human activity in public transport in complementary models to advise on the operation, design and maintenance of future ventilation systems to guarantee a safer environment.
‘These simulations focused on public transport vehicles but could be extended to commercial or residential buildings, healthcare facilities, offices or schools,’ commented Pena-Monferrer.
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