Effect of a UV-C Automatic Last-Generation Mobile Robotic System on Multi-Drug Resistant Pathogens

Carla Russo, Desirée Bartolini, Cristina Corbucci, Anna Maria Stabile, Mario Rende, Antimo Gioiello, Gabriele Cruciani, Antonella Mencacci, Francesco Galli and Donatella Pietrella
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Carla Russo: Microbiology and Clinical Microbiology Section, Department of Medicine and Surgery, University of Perugia, 06129 Perugia, Italy
Desirée Bartolini: Unit of Human, Clinical and Forensic Anatomy, Department of Medicine and Surgery, University of Perugia, 06129 Perugia, Italy
Cristina Corbucci: Microbiology Unit, Santa Maria della Misericordia Hospital, 06129 Perugia, Italy
Anna Maria Stabile: Unit of Human, Clinical and Forensic Anatomy, Department of Medicine and Surgery, University of Perugia, 06129 Perugia, Italy
Mario Rende: Unit of Human, Clinical and Forensic Anatomy, Department of Medicine and Surgery, University of Perugia, 06129 Perugia, Italy
Antimo Gioiello: Department of Pharmaceutical Sciences, University of Perugia, 06122 Perugia, Italy
Gabriele Cruciani: Department of Chemistry, Biology and Biotechnology, University of Perugia, 06123 Perugia, Italy
Antonella Mencacci: Microbiology and Clinical Microbiology Section, Department of Medicine and Surgery, University of Perugia, 06129 Perugia, Italy
Francesco Galli: Department of Pharmaceutical Sciences, University of Perugia, 06122 Perugia, Italy
Donatella Pietrella: Microbiology and Clinical Microbiology Section, Department of Medicine and Surgery, University of Perugia, 06129 Perugia, Italy

IJERPH, 2021, vol. 18, issue 24, 1-12

Abstract: Background: Healthcare-associated infections caused by multi-drug resistant (MDR) pathogens are associated with increased mortality and morbidity among hospitalized patients. Inanimate surfaces, and in particular high-touch surfaces, have often been described as the source for outbreaks of nosocomial infections. The present work aimed to evaluate the efficacy of a last-generation mobile (robotic) irradiation UV-C light device R2S on MDR microorganisms in inanimate surfaces and its translation to hospital disinfection. Methods: The efficacy of R2S system was evaluated in environmental high-touch surfaces of two separate outpatient rooms of Perugia Hospital in Italy. The static UV-C irradiation effect was investigated on both the bacterial growth of S. aureus , MRSA, P. aeruginosa , and K. pneumoniae KPC and photoreactivation. The antimicrobial activity was also tested on different surfaces, including glass, steel, and plastic. Results: In the environmental tests, the R2S system decreased the number of bacteria, molds, and yeasts of each high-touch spot surface (HTSs) compared with manual sanitization. UV-C light irradiation significantly inhibits in vitro bacterial growth, also preventing photoreactivation. UV-C light bactericidal activity on MDR microorganisms is affected by the type of materials of inanimate surfaces. Conclusions: The last-generation mobile R2S system is a more reliable sanitizing procedure compared with its manual counterpart.

Keywords: UV-C light device; MDR microorganisms; photoreactivation; high-touch surface; disinfection (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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