July 7, 2020

Visualizing the effectiveness of face masks in obstructing respiratory jets

Category: Article Summary

Topic: Non-Pharmaceutical Interventions

• Using qualitative visualizations of emulated coughs and sneezes, Verma et al. conclude that loosely folded face masks and bandana-style coverings provide minimal stopping-capability for the smallest aerosolized respiratory droplets. Well-fitted homemade masks with multiple layers of quilting fabric and off-the-shelf cone style masks proved to be the most effective in reducing droplet dispersal. They also find that uncovered emulated coughs were able to travel up to 12 feet, notably farther than the currently recommended 6-ft distancing guideline. 

Verma et al. (June 30, 2020). Visualizing the effectiveness of face masks in obstructing respiratory jets. Physics of Fluids.  https://doi.org/10.1063/5.0016018