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Evaluation of survival rates of airborne microorganisms on the filter layers of commercial face masks.
Jeong, Sang Bin; Heo, Ki Joon; Ko, Hyun Sik; Ahn, Jae Pyoung; Lee, Seung-Bok; Jung, Jae Hee.
Afiliação
  • Jeong SB; Center for Environment, Health, and Welfare Research, Korea Institute of Science and Technology (KIST), Seoul, Korea.
  • Heo KJ; Energy Environment Policy and Technology, Graduate School of Energy and Environment, Korea University, Seoul, Korea.
  • Ko HS; Department of Environmental Machinery, Korea Institute of Machinery and Materials (KIMM), Daejeon, Korea.
  • Ahn JP; Department of Mechanical Engineering, Sejong University, Seoul, Korea.
  • Lee SB; Advanced Analysis Center, Korea Institute of Science and Technology (KIST), Seoul, Korea.
  • Jung JH; Center for Environment, Health, and Welfare Research, Korea Institute of Science and Technology (KIST), Seoul, Korea.
Indoor Air ; 31(4): 1134-1143, 2021 07.
Article em En | MEDLINE | ID: mdl-33682971
ABSTRACT
After the WHO designated COVID-19 a global pandemic, face masks have become a precious commodity worldwide. However, uncertainty remains around several details regarding face masks, including the potential for transmission of bioaerosols depending on the type of mask and secondary spread by face masks. Thus, understanding the interplay between face mask structure and harmful bioaerosols is essential for protecting public health. Here, we evaluated the microbial survival rate at each layer of commercial of filtering facepiece respirators (FFRs) and surgical masks (SMs) using bacterial bioaerosols. The penetration efficiency of bacterial particles for FFRs was lower than that for SMs; however, the microbial survival rate for all tested masks was >13%, regardless of filtration performance. Most bacterial particles survived in the filter layer (44%-77%) (e.g., the core filtering layer); the outer layer also exhibited significant survival rates (18%-29%). Most notably, survival rates were determined for the inner layers (<1% for FFRs, 3%-16% for SMs), which are in contact with the respiratory tract. Our comparisons of the permeability and survival rate of bioaerosols in each layer will contribute to bioaerosol-face mask research, while also providing information to facilitate the establishment of a mask-reuse protocol.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Máscaras Tipo de estudo: Evaluation_studies Limite: Humans Idioma: En Revista: Indoor Air Assunto da revista: SAUDE AMBIENTAL Ano de publicação: 2021 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Máscaras Tipo de estudo: Evaluation_studies Limite: Humans Idioma: En Revista: Indoor Air Assunto da revista: SAUDE AMBIENTAL Ano de publicação: 2021 Tipo de documento: Article