Research and Publications

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Predicting airborne coronavirus inactivation by far‑UVC in populated rooms using a high‑fidelity coupled radiation‑CFD model

There are increased risks of contracting COVID-19 in hospitals and long-term care facilities, particularly for vulnerable groups. In these...

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Disinfection capabilities of a 222 nm wavelength ultraviolet lighting device: a pilot study

Objective: To demonstrate the efficacy of the SafeZone UVC (Ushio Inc., Japan) 222 nm ultraviolet C (UVC) light to reduce bacterial burden in...

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Far-UVC light: A new tool to control the spread of airborne-mediated microbial diseases

Airborne-mediated microbial diseases such as influenza and tuberculosis represent major public health challenges. A direct approach to prevent...

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Effectiveness of 222-nm ultraviolet light on disinfecting SARS-CoV-2 surface contamination

Background: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which causes coronavirus disease 2019 (COVID-19), has emerged as a serious...

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Far-UVC light (222 nm) efficiently and safely inactivates airborne human coronaviruses

A direct approach to limit airborne viral transmissions is to inactivate them within a short time of their production. Germicidal ultraviolet light,...

Ultraviolet Lighting During Orthopaedic Surgery and the Rate of Infection

In this study, Ritter et al. compared the disinfection efficacy of laminar airflow (LAF) and conventional UV light over a nineteen-year period in...

Chronic irradiation with 222 nm UVC light induces neither DNA damage nor epidermal lesions in mouse skin, even at high doses

In this study, chronic irradiation with 222 nm UVC light was revealed not to induce mutagenic or cytotoxic effects in the epidermis of mice. These...

Re-Evaluation of Rat Corneal Damage by Short-Wavelength UV Revealed Extremely Less Hazardous Property of Far-UVC

This peer-reviewed article evaluated acute corneal damage induced by 222 and 254 nm UV light in albino rats. In the study, no corneal damage was...

Long‐term Effects of 222 nm ultraviolet radiation C Sterilizing Lamps on Mice Susceptible to Ultraviolet Radiation

In a study conducted by Yamano et al., the long-term effects of UV222 irradiation on the skin and eyes were assessed using mice, which are known to...