Coronavirus exposure reduction strategies in aircraft cabins involving vacant middle seats and masks

Study: Evaluating vacant middle seats and masks as Coronovirus exposure reduction strategies in aircraft cabins using particle tracer experiments and computational fluid dynamics simulations. Image Credit: FamVeld / Shutterstock

Various studies have examined the effectiveness of wearing masks and distanced seating in reducing the number of secondary infections in an aircraft during the severe airborne respiratory syndrome and hemagglutinin 1 neuraminidase 1 epidemics and the recent coronavirus disease 2019 pandemic.

The United States Transportation Command study provided data on aerosol tracer experiments conducted onboard Boeing 767 and 777 aircraft, which were functional and in use. The National Institute for Occupational Safety and Health examined the effectiveness of vacant middle seats compared to fully occupied aircraft cabins in reducing droplet exposure by performing MS2 bacteriophage tracer experiments.

Results The results reported that leaving the middle seat vacant indicated a 54% average reduction in exposure for individuals in the same seat row as the infected passenger and a 36% average reduction for passengers in a 24-row cabin with one infected individual. In addition, individuals in seats farther away from the infected passenger were at a 41% lower risk of exposure than those sitting adjacent, with a 20% lower risk of exposure.

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