Effectiveness of Plasma-Treated Hydrogen Peroxide Mist Disinfection in Various Hospital Environments

Jongbong Choi, Minhyuk Lee, Yangsoon Lee, Yeongtak Song, Yongil Cho and Tae Ho Lim
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Jongbong Choi: Department of Biomedical Engineering, Hanyang University, Seoul 04763, Korea
Minhyuk Lee: Department of Biomedical Engineering, Hanyang University, Seoul 04763, Korea
Yangsoon Lee: Department of Laboratory Medicine, College of Medicine, Hanyang University, Seoul 04763, Korea
Yeongtak Song: Department of Emergency Medicine, College of Medicine, Hanyang University, Seoul 04763, Korea
Yongil Cho: Department of Emergency Medicine, College of Medicine, Hanyang University, Seoul 04763, Korea
Tae Ho Lim: Department of Emergency Medicine, College of Medicine, Hanyang University, Seoul 04763, Korea

IJERPH, 2021, vol. 18, issue 18, 1-9

Abstract: Hospital environments are associated with a high risk of infection. As plasma-treated hydrogen peroxide mist disinfection has a higher disinfection efficacy, we tested the efficacy of plasma-treated hydrogen peroxide mist disinfection on several surfaces in various hospital environments. Disinfection was performed in 23 rooms across different hospital environments, including hospital wards, outpatient departments (OPDs), and emergency rooms. A total of 459 surfaces were swabbed before/after disinfection. Surfaces were also divided into plastic, metal, wood, leather, ceramic, silicone, and glass for further analyses. Only gram-positive bacteria were statistically analyzed because the number of gram-negative bacteria and mold was insufficient. Most colony-forming units (CFUs) of gram-positive bacteria were observed in OPDs and on leather materials before disinfection. The proportion of surfaces that showed a percentage decrease in CFU values of more than 90% after disinfection were as follows: OPDs (85%), hospital wards (99%), and emergency rooms (100%); plastic (97%), metal (83%), wood (84%), leather (81%), and others (87%). Plasma-treated hydrogen peroxide mist disinfection resulted in a significant decrease in the CFU values of gram-positive bacteria in various environments. Plasma-treated hydrogen peroxide mist disinfection is an effective and efficient method of disinfecting various hospital environments.

Keywords: plasma activation; hydrogen peroxide; surface disinfection; hospital rooms; surface type (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
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