Ultraviolet-c-based mobile phone sanitisation for global public health and infection control

Olsen, Matthew, Goldsworthy, Adrian, Nassar, Rania, Senok, Abiola, Albastaki, Abdullah, Lee, Zheng Z., Abraham, Sam, Alghafri, Rashed, Tajouri, Lotti and McKirdy, Simon 2023. Ultraviolet-c-based mobile phone sanitisation for global public health and infection control. Microorganisms 11 (8) , 1876. 10.3390/microorganisms11081876

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Abstract

Introduction. Mobile phones act as fomites that pose a global public health risk of disseminating microorganisms, including highly pathogenic strains possessing antimicrobial resistances. The use of ultraviolet-C (UV-C) to sanitise mobile phones presents an alternative means to complement basic hand hygiene to prevent the cross-contamination and dissemination of microorganisms between hands and mobile phones. Aim. This study aimed to evaluate the germicidal efficacy of the Glissner CleanPhone UV-C phone sanitiser (Glissner) device. Methods. Two experimental trials were performed for the evaluation of the CleanPhone (Glissner). The first was a controlled trial, where the germicidal efficacy of the CleanPhone was evaluated against six different microorganism species that were inoculated onto mobile phones. The second was a field trial evaluating the germicidal efficacy of the CleanPhone on 100 volunteer mobile phones. Efficacy was determined based on colony counts of microorganisms on Columbia sheep blood agar before and after UV-C treatment. Results. In the controlled trial, reduction in growth was observed for all microorganisms after UV-C treatment with ST131 Escherichia coli showing the highest growth reduction at 4 log10 CFU/mL followed by C. albicans and ATCC E. coli at 3 log10 CFU/mL. An overall reduction in microorganism growth after UV-C treatment was also observed for the field trial, with an average growth reduction of 84.4% and 93.6% in colony counts at 24 h and 48 h post-incubation, respectively. Conclusion. The findings demonstrated the capability of the CleanPhone (Glissner) to rapidly sanitise mobile phones, thereby providing a means to reduce the potential dissemination of microorganisms, including highly pathogenic strains with antimicrobial resistance.

Item Type:	Article
Date Type:	Published Online
Status:	Published
Schools:	Dentistry
Additional Information:	License information from Publisher: LICENSE 1: URL: https://creativecommons.org/licenses/by/4.0/, Type: open-access
Publisher:	MDPI
Date of First Compliant Deposit:	9 August 2023
Date of Acceptance:	24 July 2023
Last Modified:	10 Aug 2023 03:06
URI:	https://orca.cardiff.ac.uk/id/eprint/161552

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