A Simple HEPA Filtering Facepiece
Kenneth H. Wilson, David Jay Weber, James M. Samet, William D. Bennett, Conor A. Ruzycki, Kirby L. Zeman, Centers for Disease Control and Prevention Prevention Epicenters Program, Phillip W. Clapp, Emily E. Sickbert-Bennett, Andrew R. Martin, Jon H. Berntsen, Warren H. Finlay · Carolina Digital Repository (University of North Carolina at Chapel Hill) · 2022
Shortages of efficient filtering facepiece respirators leave the public vulnerable to transmission of infectious diseases in small particle aerosols. This study demonstrates that a high-filtration-efficiency facepiece capable of filtering out >95% of 0.05μm particles while being worn can be simply produced with available materials.