A study carried out by researchers from the University of Hiroshima (Japan) has shown that the use of ultraviolet C light with a wavelength of 222 nanometers (nm) logra to eliminate “effectively” SARS-CoV-2, the virus that causes the disease known as Covid-19.
Other studies involving this type of ultraviolet light they have only analyzed its potency to eradicate seasonal coronaviruses which are structurally similar to SARS-CoV-2, but not to the virus that causes Covid-19 itself.
Given this, the Japanese researchers, whose work has been published in the American Journal of Infection Control, They have developed an in vitro experiment which has shown that 99.7 percent of the SARS-CoV-2 viral culture died after 30-second exposure to UV light irradiation from 222 nm to 0.1 mW / cm 2.
“A safer alternative”
This wavelength cannot penetrate the outer layer of the eye and the skin of people, which is why experts have assured that will not harm living cells found below. “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 a further evaluation of safety and efficacy of the irradiation of this light will kill the coronavirus on surfaces of the real worldas their study only investigated its efficacy in vitro.