Do They Really Work? Quantifying Fabric Mask Effectiveness to Improve Public Health Messaging

Charles Freeman, Reuben Burch, Lesley Strawderman, Catherine Black, David Saucier, Jaime Rickert, John Wilson, Holli Seitz and Jeffrey Stull
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Charles Freeman: School of Human Sciences, Mississippi State University, Starkville, MS 39762, USA
Reuben Burch: Department of Industrial & Systems Engineering, Mississippi State University, Starkville, MS 39762, USA
Lesley Strawderman: Department of Industrial & Systems Engineering, Mississippi State University, Starkville, MS 39762, USA
Catherine Black: School of Human Sciences, Mississippi State University, Starkville, MS 39762, USA
David Saucier: Human Factors & Athlete Engineering, Center for Advanced Vehicular Systems, Mississippi State University, Starkville, MS 39759, USA
Jaime Rickert: Institute for Clean Energy and Technology, Mississippi State University, Starkville, MS 39759, USA
Holli Seitz: Department of Communication, Mississippi State University, Starkville, MS 39762, USA
Jeffrey Stull: International Personal Protection, Incorporated, Austin, TX 78709, USA

IJERPH, 2022, vol. 19, issue 11, 1-13

Abstract: The purpose of this study is to compare masks (non-medical/fabric, surgical, and N95 respirators) on filtration efficiency, differential pressure, and leakage with the goal of providing evidence to improve public health messaging. Masks were tested on an anthropometric face filtration mount, comparing both sealed and unsealed. Overall, surgical and N95 respirators provided significantly higher filtration efficiency (FE) and differential pressure (dP). Leakage comparisons are one of the most significant factors in mask efficiency. Higher weight and thicker fabric masks had significantly higher filtration efficiency. The findings of this study have important implications for communication and education regarding the use of masks to prevent the spread of COVID-19 and other respiratory illnesses, specifically the differences between sealed and unsealed masks. The type and fabric of facial masks and whether a mask is sealed or unsealed has a significant impact on the effectiveness of a mask. Findings related to differences between sealed and unsealed masks are of critical importance for health care workers. If a mask is not completely sealed around the edges of the wearer, FE for this personal protective equipment is misrepresented and may create a false sense of security. These results can inform efforts to educate health care workers and the public on the importance of proper mask fit.

Keywords: filtration efficiency; barrier face covering; healthcare workers; COVID-19 (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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