한국산업보건학회지 (Journal of Korean Society of Occupational and Environmental Hygiene)

  • 제34권1호
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  • Pages.48-56
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  • 2024
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  • 2384-132X(pISSN)
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  • 2289-0564(eISSN)
한국산업보건학회 (Korean Industrial Hygiene Association)
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착용 기간에 따른 KF94 마스크 세균여과효율 변화 연구

Bacterial Filtration Efficiencies of KF94 Masks According to Wearing Duration

  • 박종민 (서울대학교 보건대학원 환경보건학과) ;
  • 양예람 (서울대학교 보건대학원 환경보건학과) ;
  • 박성준 (서울대학교 보건대학원 환경보건학과) ;
  • 이기영 (서울대학교 보건대학원 환경보건학과) ;
  • 이정훈 (서울대학교 보건대학원 환경보건학과) ;
  • 윤충식 (서울대학교 보건대학원 환경보건학과)
  • Jongmin Park (Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University) ;
  • Yeram Yang (Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University) ;
  • SungJun Park (Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University) ;
  • Kiyoung Lee (Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University) ;
  • Cheonghoon Lee (Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University) ;
  • Chungsik Yoon (Department of Environmental Health Sciences, Graduate School of Public Health, Seoul National University)
  • 투고 : 2024.01.10
  • 심사 : 2024.03.01
  • 발행 : 2024.03.31
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초록

Objectives: The coronavirus pandemic that began in 2019(COVID-19) has been one of the worst pandemics of the 21st century. Masks have been used to prevent COVID-19, but there are currently no standards for the long-term use of masks in the Republic of Korea. This study was conducted to assess the microbiological safety of KF94(Korea Filter 94) disposable face masks according to wearing duration by evaluating the bacterial filtration efficiencies of masks worn by research participants. Methods: A commercially available KF94 mask certified by the Ministry of Food and Drug Safety(MFDS) in the Republic of Korea was selected as the test mask. The research participants(n = 15) wore masks for the durations of one, three, and seven days. Participants also reported several parameters, including wearing time, makeup frequency, and storage. Bacterial filtration efficiencies of the worn masks were measured by a mask bioaerosol filtration tester. Staphylococcus aureus(S. aureus) was used as the test bacteria and quantitatively measured through the cultivation method. Then, bacterial filtration efficiency was calculated using the formula suggested by the MFDS. Results: All worn masks showed over 99.98% of mean bacterial filtration efficiency for S. aureus. There were no significant differences among bacterial filtration efficiencies of face masks according to wearing duration. There was also no significant difference among bacterial filtration efficiencies among participants. There was no correlation between the results of bacterial filtration efficiencies and reported parameters from participants. Conclusions: In the absence of significant external damage to the mask, the bacterial filtration efficiency of the mask can be maintained even after seven days of wearing. This result suggests that KF94 masks certified by the MFDS can be used repeatedly for about a week without loss of bacterial filtration efficiency.

키워드

과제정보

본 연구는 서울대학교 발전기금(도부 학술장학금)의 재원으로 수행하는 연구사업의 지원을 받아 수행하였습니다.

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