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Original Article
Korean J healthc assoc Infect Control Prev 2023; 28(1): 99-105
Published online June 30, 2023 https://doi.org/10.14192/kjicp.2023.28.1.99
Copyright © Korean Society for Healthcare-associated infection Control and Prevention
Efficacy of Disinfection Using Activated Ionized Hydrogen Peroxide System for Carbapenemase-producing Enterobacterales and Vancomycin Resistant Enterococci
Keon Young Lee1, Jin Young Kang2, Un Young Choi2, Jae Hee Lee2,3, Nam Hee Ryu4, Miri Hyun1, Hyun Ah Kim1, Ji Yeon Lee1,2 
Department of Infectious Diseases, Keimyung University Dongsan Hospital1, Infection Control Office2, Department of Laboratory Medicine, Keimyung University Daegu Dongsan Hospital3, Department of Laboratory Medicine, Keimyung University Dongsan Hospital4, Daegu, Korea
Correspondence to: Ji Yeon Lee
E-mail: jirong84@dsmc.or.kr
ORCID: https://orcid.org/0000-0002-2788-1392
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0).
Background: Multidrug-resistant pathogens such as carbapenemase-producing Enterobacterales (CPE) and vancomycin-resistant enterococci (VRE) are of concern in hospitals worldwide. Hydrogen peroxide sterilizer is one of the ‘no-touch’ disinfection systems. In this study, we aimed to confirm the efficacy of the activated ionized hydrogen peroxide (AIHP) system space sterilizer developed in South Korea.
Methods: Eighty sheets contaminated with CPE and VRE were placed in each room. The AIHP space sterilizer (MUGYUN, SUNGSAM, Korea) was used for sterilization. After the intervention, the mediums were incubated at 37℃ for 24 h, and colony-forming units (CFUs) were analyzed.
Results: The median number of strains on the sheets before sterilization was 2.64×106 CFUs (6.42 log10 inoculum). The median log10 reduction was 7.12 and 6.91 for CPE and VRE, respectively, after the intervention.
Conclusion: The AIHP space sterilizer developed in Korea was effective for the sterilization of VRE and CPE in the healthcare environment.
Keywords: Carbapenem-resistant enterobacteriaceae, Disinfection, Vancomycin-resistant enterococci
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