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. 2021 Sep 15;3(9):000194.
doi: 10.1099/acmi.0.000194. eCollection 2021.

Disinfection of methicillin-resistant Staphylococcus aureus, vancomycin-resistant Enterococcus faecium and Acinetobacter baumannii using Klaran WD array system

Richard M Mariita  1 , Rajul V Randive  1
Affiliations

Disinfection of methicillin-resistant Staphylococcus aureus, vancomycin-resistant Enterococcus faecium and Acinetobacter baumannii using Klaran WD array system

Richard M Mariita et al. Access Microbiol. .

Abstract

Hospital-associated infections (HAIs) are a major burden in healthcare systems. In this study, UVC LEDs emitting radiation from 260 to 270 nm were evaluated for effectiveness in reducing methicillin-resistant Staphylococcus aureus (MRSA), vancomycin-resistant Enterococcus faecium and Acinetobacter baumannii . The array has four WD LEDs, each with 70 mW placed at 7 cm from test organisms. With 11.76 mJ cm-2, the study obtained 99.99% reduction (log10 reduction factor of 4) against MRSA and VRE. For A. baumannii , 9 mJ cm-2 obtained 99.999% reduction (log10 reduction factor of 5). These results present scientific evidence on how effective UVC LEDs can be used in the fight against HAIs.

Keywords: Acinetobacter baumannii; HVAC; UVC LEDs; disinfection; healthcare-associated infections; methicillin-resistant Staphylococcus aureus (MRSA); vancomycin-resistant enterococcus faecium.

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Conflict of interest statement

Both R. M. M. and R. V. R. work for Crystal IS, an Asahi Kasei company that manufactures UVC LEDs.

Figures

Fig. 1.
Fig. 1.
Disinfection efficacy of UVC against key pathogens associated with HAIs. A. baumannii was more sensitive against UVC compared to MRSA and VRE.
See this image and copyright information in PMC

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