Disinfectant Activity of A Portable Ultraviolet C Equipment

Andrea Guridi, Elena Sevillano, Iñigo de la Fuente, Estibaliz Mateo, Elena Eraso and Guillermo Quindós
Additional contact information
Andrea Guridi: Department of Immunology, Microbiology and Parasitology, Faculty of Pharmacy, University of the Basque Country UPV/EHU, 01006 Vitoria-Gasteiz, Spain
Elena Sevillano: UFI 11/25 «Microbios y Salud», Department of Immunology, Microbiology and Parasitology, Faculty of Medicine and Nursing, University of the Basque Country, UPV/EHU Apartado 699, 48080 Bilbao, Spain
Iñigo de la Fuente: UFI 11/25 «Microbios y Salud», Department of Immunology, Microbiology and Parasitology, Faculty of Medicine and Nursing, University of the Basque Country, UPV/EHU Apartado 699, 48080 Bilbao, Spain
Estibaliz Mateo: UFI 11/25 «Microbios y Salud», Department of Immunology, Microbiology and Parasitology, Faculty of Medicine and Nursing, University of the Basque Country, UPV/EHU Apartado 699, 48080 Bilbao, Spain
Elena Eraso: UFI 11/25 «Microbios y Salud», Department of Immunology, Microbiology and Parasitology, Faculty of Medicine and Nursing, University of the Basque Country, UPV/EHU Apartado 699, 48080 Bilbao, Spain
Guillermo Quindós: UFI 11/25 «Microbios y Salud», Department of Immunology, Microbiology and Parasitology, Faculty of Medicine and Nursing, University of the Basque Country, UPV/EHU Apartado 699, 48080 Bilbao, Spain

IJERPH, 2019, vol. 16, issue 23, 1-11

Abstract: Healthcare-associated infections (HAIs) can be caused by microorganisms present in common practice instruments generating major health problems in the hospital environment. The aim of this work was to evaluate the disinfection capacity of a portable ultraviolet C equipment (UV Sanitizer Corvent ® -UVSC-) developed to disinfect different objects. For this purpose, six pathogens causing HAIs: Acinetobacter baumannii , Bacillus subtilis , Escherichia coli , Pseudomonas aeruginosa , Staphylococcus aureus and Candida albicans , were inoculated on slides and discs of different biomaterials (borosilicate, polycarbonate, polyurethane, silicone, Teflon and titanium) and exposed to ultraviolet C radiation. UVSC disinfection was compared with ethanol and chlorhexidine antimicrobial activities following the standards EN14561 and EN14562. Disinfection, established as a reduction of five logarithms from the initial inoculum, was achieved with the UVSC at 120 s of exposure time, with and without the presence of organic matter. The disinfectant effect was observed against S. aureus , P. aeruginosa , E. coli , B. subtilis and C. albicans (reduction >99.999%). Disinfection was also achieved with 70% ethanol and 2% chlorhexidine. As conclusion, UVSC was effective disinfecting the most contaminated surfaces assayed, being a promising alternative for disinfecting hospital materials and inanimate objects that cannot be immersed in liquid biocides, reducing the risk of pathogen transmission.

Keywords: UVC light disinfection; portable equipment; healthcare-associated infections; disinfection (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2019
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