Survey of Home‐Use UV Disinfection Products<sup>†</sup>

Khazova, Marina; Johnstone, Liam; Naldzhiev, Dzhordzhio; O’Hagan, John

doi:10.1111/php.13423

Cited by 10 publications

(11 citation statements)

References 21 publications

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“…This study may have a significant impact on the disinfection of sanitary spaces in constant contact with the virus during pandemics, such as ambulances, hospital rooms, operating rooms, emergency rooms, or even the changing rooms where EPIs are discarded. However, UV irradiation must be used in empty spaces, out of contact with humans, because UV-B and UV-A are generally considered to be carcinogenic and UV-C light causes erythema and triggers photokeratitis [ 24 ]. PX-UV irradiation for 4 min at a 1.5 m distance (UV dose 21.162 mJ/cm 2 ; UVC dose 5.402 mJ/cm 2 ) seems to be enough, and more effective than irradiation with conventional UV lights, to effectively disinfect surfaces in closed spaces during pandemics.…”

Section: Discussionmentioning

confidence: 99%

Pulsed-Xenon Ultraviolet Light Highly Inactivates Human Coronaviruses on Solid Surfaces, Particularly SARS-CoV-2

Belló-Pérez

Esparza

Encina

et al. 2022

IJERPH

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In the context of ongoing and future pandemics, non-pharmaceutical interventions are critical in reducing viral infections and the emergence of new antigenic variants while the population reaches immunity to limit viral transmission. This study provides information on efficient and fast methods of disinfecting surfaces contaminated with different human coronaviruses (CoVs) in healthcare settings. The ability to disinfect three different human coronaviruses (HCoV-229E, MERS-CoV, and SARS-CoV-2) on dried surfaces with light was determined for a fully characterized pulsed-xenon ultraviolet (PX-UV) source. Thereafter, the effectiveness of this treatment to inactivate SARS-CoV-2 was compared to that of conventional low-pressure mercury UVC lamps by using equivalent irradiances of UVC wavelengths. Under the experimental conditions of this research, PX-UV light completely inactivated the CoVs tested on solid surfaces since the infectivity of the three CoVs was reduced up to 4 orders of magnitude by PX-UV irradiation, with a cumulated dose of as much as 21.162 mJ/cm2 when considering all UV wavelengths (5.402 mJ/cm2 of just UVC light). Furthermore, continuous irradiation with UVC light was less efficient in inactivating SARS-CoV-2 than treatment with PX-UV light. Therefore, PX-UV light postulates as a promising decontamination measure to tackle the propagation of future outbreaks of CoVs.

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Section: Discussionmentioning

confidence: 99%

Pulsed-Xenon Ultraviolet Light Highly Inactivates Human Coronaviruses on Solid Surfaces, Particularly SARS-CoV-2

Belló-Pérez

Esparza

Encina

et al. 2022

IJERPH

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“…Penelitian terkait inaktivasi virus oleh sinar matahari telah dilaporkan pada virus influenza (Schuit et al 2020a) dan juga virus SARS-CoV-2 berdasarkan percobaan di laboratorium menggunakan sinar matahari buatan (Ratnesar-Shumate et al 2020;Schuit et al 2020b;Dabisch et al 2021), maupun berdasarkan simulasi data meteorologi (Herman et al 2021). Dari berbagai hasil studi tersebut dapat disimpulkan bahwa tingkat inaktivasi virus dipengaruhi oleh intensitas cahaya dan lama paparan sinar matahari.…”

Section: Sinar Ultra Violetunclassified

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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“…In a recent investigation by Khazova et al [ 31 ], 48 commercial home-use UV disinfection devices were investigated for their coronavirus reduction potential and safety to skin and eye. Most of them contained UVC emitters, but also some UVA emitters or even visible light sources.…”

Section: Introductionmentioning

confidence: 99%

Review of microbial touchscreen contamination for the determination of reasonable ultraviolet disinfection doses

Heßling

Haag

Sicks

2021

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Background: Touchscreens are usually microbially contaminated and can therefore act as fomites inside and outside healthcare environments. Due to the increasing use of such touchscreens and the growing awareness of infection risks, approaches that allow safe and automatic disinfection are desired. Ultraviolet (UV) irradiation, with its known antimicrobial efficacy, could achieve this goal, but should be executed with limited touchscreen degradation, disinfection duration, and energy consumption. It should also pose as little harm as possible to humans even in case of failure. Materials and methods: A literature search was performed first to identify the microorganisms most commonly found on touchscreens. Then, the 90% reduction doses (D90 doses) for the different relevant microorganisms and UV spectral ranges were determined from the literature, and irradiation doses are suggested that should reduce most of these important microorganisms by 5 log-levels. Results: The most frequent microorganisms are staphylococci, bacilli, micrococci, enterococci, pseudomonads and E. coli with small differences between hospital and community environments, if antibiotic resistance properties are ignored. The determined irradiation doses for a 5 log-reduction of the most frequent microorganisms are about 40 mJ/cm 2 , 80 J/cm 2 , 500 J/cm 2 and 50 mJ/cm 2 for the UV spectral ranges UVC, UVB, UVA and far-UVC, respectively. These doses are also sufficient to inactivate all nosocomial ESKAPE pathogens on touchscreens by at least 99.999%. Conclusion: Disinfection is achievable in all UV spectral ranges, with UVC being the most effective, enabling automatic disinfection within a minute or less. The much higher doses required in the UVB and UVA spectral range result in much longer disinfection durations, with the advantage of a reduced risk to humans. For all kinds of UV irradiation, the doses should be limited to reasonable values to avoid irradiating an already more or less sterile surface and to prevent degradation of touchscreen devices.

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Survey of Home‐Use UV Disinfection Products^†

Cited by 10 publications

References 21 publications

Pulsed-Xenon Ultraviolet Light Highly Inactivates Human Coronaviruses on Solid Surfaces, Particularly SARS-CoV-2

Pulsed-Xenon Ultraviolet Light Highly Inactivates Human Coronaviruses on Solid Surfaces, Particularly SARS-CoV-2

Tinjauan Teknologi Inaktivasi Virus Untuk Penanggulangan Pandemi Covid-19

Review of microbial touchscreen contamination for the determination of reasonable ultraviolet disinfection doses

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Survey of Home‐Use UV Disinfection Products†

Cited by 10 publications

References 21 publications

Pulsed-Xenon Ultraviolet Light Highly Inactivates Human Coronaviruses on Solid Surfaces, Particularly SARS-CoV-2

Pulsed-Xenon Ultraviolet Light Highly Inactivates Human Coronaviruses on Solid Surfaces, Particularly SARS-CoV-2

Tinjauan Teknologi Inaktivasi Virus Untuk Penanggulangan Pandemi Covid-19

Review of microbial touchscreen contamination for the determination of reasonable ultraviolet disinfection doses

Contact Info

Product

Resources

About

Survey of Home‐Use UV Disinfection Products^†