“All bacteria and viruses tested to date (many hundreds over the years, including other coronaviruses) respond to UV disinfection,” according to the International Ultraviolet Association (IUVA). When produced artificially, UV-C breaks up the genetic material of the pathogens floating in air or water and sticking to surfaces so that they cannot function or reproduce. That’s a good thing because our fragile skin and eyes couldn’t handle it. The UV-C emitted by the sun is stopped by the ozone layer, so we aren’t directly exposed to it. ![]() It’s a germicide, which means it can kill up to 99.99 per cent of bacteria and viruses. UV-A and UV-B, the spectrums found in tanning beds or a wide variety of UV lamps and wands marketed to consumers, have virtually no effect on bacteria and viruses, says experts.īut a short-wave spectrum called UV-C is much more dangerous to all genetic material. UV-B more deeply damages the DNA in skin, leading to sunburn and eventually skin cancer. UV-A makes up the vast majority of the UV radiation reaching Earth and can penetrate deep into skin, causing aging such as wrinkles and age spots. To protect yourself, make sure you clean your hands frequently and thoroughly and avoid touching your eyes, mouth, and nose.”Ī quick lesson: the sun produces a spectrum of UV light. ![]() Countries with hot weather have reported cases of COVID-19. “You can catch COVID-19, no matter how sunny or hot the weather is. The WHO also dismissed the idea that sun exposure or temperatures over 25C prevent COVID-19. Newsletter sign-up: Get The COVID-19 Brief sent to your inbox.“UV lamps should not be used to sterilize hands or other areas of skin as UV radiation can cause skin irritation,” the agency said. The World Health Organization (WHO) has warned that UV light should not be used as a disinfectant for the coronavirus. ![]() That’s because one segment of UV light is extremely effective when it comes to killing microorganisms, including coronaviruses like the one that causes COVID-19.īut the idea making the rounds online that UV light could be used to disinfect hands, clothing or other household objects is either incorrect or dangerous, depending on what type of UV you’re talking about. Ultraviolet light is getting a lot of attention when it comes to disinfecting and reusing masks that medical workers need to safely do their jobs.
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