Alliance for Pandemic Preparedness

March 2, 2021

Reducing COVID-19 Airborne Transmission Risks on Public Transportation Buses An Empirical Study on Aerosol Dispersion and Control

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  • [Pre-print, not peer-reviewed] Mask wearing in a transit or school bus setting could reduce the overall particle count released into the bus by an average of 50% or more (depending on mask quality), and could reduce the dispersion distance by several feet, according to an experimental study. The study conducted 84 test runs totaling 124 miles of on-the-road testing and used nebulized sodium chloride and 28 particle counters to simulate and measure cough aerosol dispersion.

Edwards et al. (Mar 1, 2021). Reducing COVID-19 Airborne Transmission Risks on Public Transportation Buses An Empirical Study on Aerosol Dispersion and Control. Pre-print downloaded Mar 2 from https://doi.org/10.1101/2021.02.25.21252220