Does UV/Sun kill the virus?

While ultraviolet (UV) light can be used at extremely high intensities as a disinfectant, everyday UV emitters, such as the sun, only release low levels of UV light.

“Ultraviolet is able to kill COVID-19 if it is exposed to the concentrated UV ray in a certain amount of time and distance,” Dr. Pokrath Hansasuta, an assistant professor of virology in Chulalongkorn University’s Department of Microbiology, explained to AFP by phone on March 18, 2020. “However, that level of UV exposure is harmful to human’s skin. Most likely, it will be in the light bulb or lamp as the natural UV from the sun is not strong enough to kill it.”

The World Health Organization (WHO) also stated here that UV should not be used as a disinfectant for the coronavirus. “UV lamps should not be used to sterilize hands or other areas of skin as UV radiation can cause skin irritation,” the agency said.

So in essence, if you have to work/go outdoor staying in sun could help as the virus may probably be dead from the sun‘s irradiation. Curing once you come in contact with the virus through UV irradiation is not possible what so ever. Useful links:

UV robots roll clean hospitals

BBC on March 20, 2020


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