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An Emerging Innovative UV Disinfection Technology (Part II): Virucide Activity on SARS-CoV-2

by Gabriele Messina 1,*,Alessandro Della Camera 2,Pietro Ferraro 1OrcID,Davide Amodeo 1,Alessio Corazza 3OrcID,Nicola Nante 1OrcID andGabriele Cevenini 4

Abstract

The coronavirus SARS-CoV-2 pandemic has become a global health burden. Surface sanitation is one of the key points to reduce the risk of transmission both in healthcare and other public spaces. UVC light is already used in hospital and laboratory infection control, and some recent studies have shown its effectiveness on SARS-CoV-2. An innovative UV chip technology, described in Part I of this study, has recently appeared able to overcome the limits of old lamps and is proposed as a valid alternative to LEDs. This study was designed to test the virucidal activity on SARS-CoV-2 of a device based on the new UV chip technology. Via an initial concentration of virus suspension of 107.2 TCID50/mL, the tests revealed a viral charge reduction of more than 99.9% after 3 min; the maximum detectable attenuation value of Log10 = 5.7 was measured at 10 min of UV exposure.

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