The uses and limitations of a hand-held germicidal ultraviolet wand for surface disinfection

Byrns, George; Barham, Beverly J.; Yang, Liangcheng; Webster, Kathryn; Rutherford, G. H.; Steiner, Garrett; Petras, Daniel; Scannell, Michele

doi:10.1080/15459624.2017.1328106

Cited by 15 publications

(10 citation statements)

References 71 publications

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“…The reduction in colonies post-FFUV disinfection was substantial and comparable to other handheld UV devices tested previously. 2,4,3,5 The effect of UV is dependent on dose and distance. Unlike other handheld UV devices, the FFUV handheld disinfection device detects the exact distance from the surface with an indicator for application, resulting in a consistent dose during use while providing guidance to the end users for optimal results.…”

Section: Discussionmentioning

confidence: 99%

“…1 Many handheld ultraviolet devices are effectively used in the healthcare setting to disinfect equipment and surfaces. 2,3,4,5 However, certain UV-C wands used for disinfecting surfaces may expose both the end user and those nearby to unsafe levels of UV-C radiation that can harm the skin and eyes within a few seconds of exposure. 6,3 Thus, there is a need for devices that are both safe for users yet effective in disinfecting surfaces or equipment.…”

Section: Introductionmentioning

confidence: 99%

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Efficacy of a Filtered Far-UVC Handheld Disinfection Device on Reducing Microbial Bioburden of Hospital Surfaces

Navarathna

Corona

Coppin

et al. 2022

Preprint

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Objectives The Filtered Far UVC handheld disinfection device is a small portable device that emits far UVC at 222nm. The objective of this study was to evaluate the devices ability to kill microbial bioburden on hospital surfaces and compare it to manual cleaning using germicidal sodium hypochlorite wipes. Methods A total of 344 surfaces (86 observations per group) were sampled with 2 pairs of samples per surface a pre and a post sodium hypochlorite sample, and a pre and a post FFUV sample. The results were analyzed via a Bayesian multi level model that account for the correlation between sample pairs and within surfaces. Additionally, the bacterial flora recovered was identified. Results The estimated mean colony counts for the sodium hypochlorite control and treatment groups were 20.5 (11.7 to 36.0) and 0.1 (0.0 to 0.2) colony forming units (CFUs) respectively. The FFUV control and treatment groups had mean colony counts of 22.2 (12.5 to 40.1) and 4.1 (2.3 to 7.2) CFUs. The sodium hypochlorite samples had an estimated 99.4% (99.0% to 99.7%) reduction in colony counts, while those from the FFUV group an estimated 81.4% (76.2% to 85.7%) reduction. Conclusions The findings from this study suggest the FFUV handheld device effectively reduced microbial bioburden on real world hospital surfaces; however, a manual clean using sodium hypochlorite was more effective in reducing bioburden. Several healthcare associated infections causing pathogens (gram positive and negative bacteria) were retrieved from the surfaces indicating a potential for onward transmission.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Efficacy of a Filtered Far-UVC Handheld Disinfection Device on Reducing Microbial Bioburden of Hospital Surfaces

Navarathna

Corona

Coppin

et al. 2022

Preprint

View full text Add to dashboard Cite

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“…Secara umum, sebagian perangkat yang diuji memiliki kemampuan inaktivasi virus hingga 90%, namun risiko terpapar sinar UV juga tinggi. Penggunaan perangkat tersebut tanpa dilengkapi fitur keamanan dari pabrik atau pelindung tubuh yang memadai memiliki risiko terpapar radiasi UV yang menyebabkan kulit terbakar dan kerusakan mata (Byrns et al 2017;Khazova et al 2021).…”

Section: Teknologi Disinfeksi Permukaan Bendaunclassified

Tinjauan Teknologi Inaktivasi Virus Untuk Penanggulangan Pandemi Covid-19

Prayitno

Darmawan

Susanto

et al. 2021

J Bioteknol Biosains Indones

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Review of Virus Inactivation Technologies for Covid-19 Pandemic Control SARS-CoV-2 virus inactivation is one of global concerns in alleviating the spread of Covid-19. The applications of virus inactivation technologies are mainly based on the knowledge of virus characteristics, its persistence on material surfaces, and environmental factors impairing its structure. Current virus inactivation methods are mostly employing chemicals dan physical treatments such as hydrogen peroxide, hypochlorite solutions, and UV light. In this paper, we discuss three current virus inactivation technologies for reducing the spread of Covid-19, i.e., room disinfection, surface disinfection, and personal protective equipment (PPE) decontamination technology. Room disinfection technology, particularly room with poor ventilation or closed air circulation, employs the combination of UV light treatment with filters. Surface disinfection technologies utilize the spraying or fogging of disinfectant solutions, and PPE decontamination technologies utilize UV light or chemical treatments to inactivate the virus. Further development and application of these technologies will help the national effort in controlling the spread of Covid-19. Inaktivasi virus SARS-CoV-2 merupakan salah satu upaya global untuk mengurangi penyebaran Covid-19. Aplikasi teknologi inaktivasi virus ini banyak bersandar pada pengetahuan mengenai karakteristik dan daya tahan virus ini pada permukaan benda dan hal-hal yang merusak struktur virus tersebut. Metode inaktivasi virus yang banyak digunakan adalah perlakuan dengan bahan kimia dan perlakuan secara fisik yaitu dengan menggunakan larutan disinfektan hidrogen peroksida, larutan hipoklorit dan sinar UV. Dalam tulisan ini, peluang aplikasi teknologi inaktivasi virus SARS-CoV-2 yang dibahas adalah teknologi disinfeksi ruangan, disinfeksi permukaan benda dan dekontaminasi alat pelindung diri. Teknologi disinfeksi ruangan khususnya pada ruangan tertutup dengan ventilasi yang kurang baik atau resirkulasi udara tertutup adalah dengan menggunakan kombinasi perlakuan sinar UV dengan filter. Teknologi disinfeksi permukaan benda menggunakan teknik penyemprotan atau pengkabutan larutan disinfektan, sedangkan teknologi dekontaminasi alat pelindung diri dilakukan dengan perlakuan sinar UV atau dengan bahan kimia. Pengembangan dan aplikasi lanjut dari teknologi inaktivasi virus ini akan membantu upaya nasional dalam penanggulangan penyebaran Covid-19.

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“…Quando a radiação UV interage com uma entidade biológica, seja uma bactéria, uma célula da nossa pele ou até um vírus, por ser ionizante, ela tem condições de causar danos ao material genético 19,20 . Dependendo dos fatores de exposição que foi comentado, esse processo pode matar a célula, a bactéria ou desativar um vírus 22,35,36 .…”

Section: Uvcunclassified

Revisão Sistemática da Utilização de Far-UVC e Ozônio no Combate à Covid-19 e demais Patógenos

et al. 2021

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Frente ao desafio de explorar novos meios de uma mitigação eficiente e acessível para inativação de patógenos e limitar sua transmissão em ambientes ocupados por pessoas, surgiu a iniciativa desta investigação que teve como objetivo primário realizar uma revisão sistemática, buscando na literatura oestado da arte em relação à utilização de radiação UVC e Ozônio como agentes germicidas no combate de vírus e bactérias.Foram pesquisados nos bancos de dados trabalhos que continham as strings “UVC" AND "wave" AND "ultraviolet" AND "radiation" AND "light" AND" intensity" e também “ozone" AND "air"AND "disinfection" AND "virus" AND "bacteria" AND "environment" AND "decontamination" AND "air decontamination". A busca foi feita nas bases de dados ScienceDirect, Web of Science, pubMED, SciELO, Google Scholar e World Wide Science. Foram encontrados 189 artigos relacionados à utilização de UVC comoagente germicida e 16 artigos acerca da utilização do ozônio, totalizando assim 205 artigos. Destes somente 44 foram selecionados para a revisão, os outros trabalhos não foram selecionados, pois não se enquadraram no critério de seleção, seja por possuir uma aplicação diferente da proposta pelo grupo, exemplo artigos que relacionavam a utilização da radiação UVC no tratamento de águas residuais ou por a data de publicação não se enquadrar no período de 2016 a 2020, nenhum artigo utilizando ambos os agentes germicidas ozônio e UVC foi encontrado. Entretanto, entres os artigos selecionados, foram relatadas informações importantes e promissoras para dar firmamento e veracidade às premissas adotadas pelos pesquisadores.

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The uses and limitations of a hand-held germicidal ultraviolet wand for surface disinfection

Cited by 15 publications

References 71 publications

Efficacy of a Filtered Far-UVC Handheld Disinfection Device on Reducing Microbial Bioburden of Hospital Surfaces

Efficacy of a Filtered Far-UVC Handheld Disinfection Device on Reducing Microbial Bioburden of Hospital Surfaces

Tinjauan Teknologi Inaktivasi Virus Untuk Penanggulangan Pandemi Covid-19

Revisão Sistemática da Utilização de Far-UVC e Ozônio no Combate à Covid-19 e demais Patógenos

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