A study carried out by researchers at the

University of Hiroshima

(Japan) has shown that the use of ultraviolet C light with a wavelength of 222 nanometers (nm) manages

to "effectively" eliminate

SARS-CoV-2, the virus that causes disease known as Covid-19.

Other studies involving this type of ultraviolet light have only looked at its potency to

eradicate seasonal coronaviruses

that are structurally similar to SARS-CoV-2, but not to the virus that causes COVID-19 itself.

Given this, Japanese researchers, whose work has been published in the 'American Journal of Infection Control', have developed an in vitro experiment that has shown that 99.7 percent of the SARS-CoV-2 viral culture

died after a 30 second exposure

to 222 nm ultraviolet light irradiation at 0.1 mW / cm 2.

This wavelength cannot penetrate the outer layer of the eye and the skin of the people, reason why the experts have assured that

it will not damage the living cells

that are underneath.

"This makes it a safer but equally powerful alternative to lamps used to disinfect sanitary facilities," the researchers concluded.

However, experts have highlighted the need for

further evaluation of the safety

and efficacy of irradiating this light to kill coronavirus on real-world surfaces, as their study only investigated its efficacy in vitro.

According to the criteria of The Trust Project

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  • Japan

  • Science and Health

  • Coronavirus

  • Covid 19

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