https://orcid.org/0000-0002-2792-4399
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ABSTRACT
The spread of novel coronavirus disease 2019 (COVID-19) infections worldwide has raised concerns about the prevention and control of SARS-CoV-2. Devices that rapidly inactivate viruses can reduce the chance of infection through aerosols and contact transmission. This in vitro study demonstrated that irradiation with a deep ultraviolet light-emitting diode (DUV-LED) of 280 ± 5 nm wavelength rapidly inactivates SARS-CoV-2 obtained from a COVID-19 patient. Development of devices equipped with DUV-LED is expected to prevent virus invasion through the air and after touching contaminated objects.
Acknowledgements
We wish to thank Drs. Tomohiko Takasaki and Jun-Ichi Sakuragi, from the Kanagawa Prefectural Institute of Public Health, for providing the SARS-CoV-2/Hu/DP/Kng/19-027 strain.
Contributors
H.I. and H.S. conceived the study and wrote the manuscript. A.S. and T.O. conducted the experiments dealing with viruses. S.F. contributed to the study design, study supervision and manuscript revision.
Disclosure statement
H.S. receives part of his salary from Nikkiso Co., Ltd., Tokyo, Japan. Nikkiso supplied the deep ultraviolet light-emitting diode (DUV-LED) instrument for evaluation. Nikkiso had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. The other authors declare no conflicts of interest.