UVGI is a disinfection method that uses short-wavelength ultraviolet light to kill or inactivate microorganisms by destroying nucleic acids and disrupting their DNA, leaving them unable to perform vital cellular functions. #CoronavirusOutbreak
https://en.wikipedia.org/wiki/Ultraviolet_germicidal_irradiation
In 1878, A. Downes and T. Blunt published a paper describing the sterilization of bacteria exposed to short-wavelength light. UV has been a known mutagen at the cellular level for over 100 yrs. The 1903 Nobel Prize for Medicine was awarded to Niels Finsen https://www.nobelprize.org/prizes/medicine/1903/summary/
The U.S. Environmental Protection Agency has accepted UV disinfection as a method for drinking water plants to obtain cryptosporidium, giardia or virus inactivation credits.
https://www.epa.gov/sites/production/files/2017-09/documents/quick_guide_for_disinfectant_products_for_drinking_water_use.pdf
WHY USE UVC LIGHT TO DISINFECT?
UVC wavelengths are between 200 and 300 nanometers, making them germicidal – meaning they are capable of inactivating microorganisms, such as bacteria, viruses and protozoa.
https://tru-d.com/ 
USB Ultraviolet Sterilization Lamp Portable 3W Ultraviolet Lamp UV Light 254nm Sterilizer Handhold LED Disinfection UVC Light - Samples
https://graviolat.blogspot.com/p/blog-page_24.html
New Gov't Findings Say Sun/UV-light Destroys the Wuhan #Coronavirus Quickly
- Sounds like there may be something to the old expression: “Sunlight is the best disinfectant.” That meant shedding light on a subject. In this case, they may mean it, literally.
https://www.redstate.com/nick-arama/2020/04/19/new-govt-findings-sunlight-destroys-the-wuhan-coronavirus-quickly/
YT Takes Down Bio-Tech Firm’s Video
UV Light Treatment for #Coronavirus Patients | April 25
- Many are now talking about UV light being used as a treatment for #COVID2019. We are proud to have teamed up with @MarkPimentelMD and his team at @CedarsSinai
https://thepatriotsreport.com/2020/04/25/youtube-takes-down-bio-tech-firms-video-explaining-potential-uv-light-treatment-for-coronavirus-patients0c315503feb3ee904ca92584d507ec21/
HEALIGHT - AYTU BIOSCIENCE | 15 hours ago
Watch “HEALIGHT - AYTU BIOSCIENCE” on #Vimeo #COVID2019 @realDonaldTrump @ylenews @MTVUutiset @THLorg https://vimeo.com/411615577?ref=tw-share
UV sterilizer Ultraviolet Sterilizer UVC light lamps
- F. ex.
8W Quartz Ozone UVC Sterilizer Kill Virus Influenza
- T5 Germicidal Tube Bedroom Hotel Bactericidal Hospital Disinfection Light
https://graviolat.blogspot.com/p/blog-page_24.html
Media mocks Trump for suggesting light treatment for #COVID2019 patients, yet bio-tech firm is using UV light treatment to kill the virus | 24 Apr
- 'Right. And then I see the disinfectant, where it knocks it out in a minute. One minute.' @ylenews @THLorg
https://www.sott.net/article/433184-Media-mocks-Trump-for-suggesting-light-treatment-for-COVID-19-patients-yet-bio-tech-firm-is-using-UV-light-treatment-to-kill-the-virus
Let There Be UV Light In The Fight Against COVID-19 by Vince Tabora
- UV lamps are definitely needed by hospitals or anywhere that treats patients of COVID-19. It helps to sterilize instruments and room surfaces, https://link.medium.com/qvhxH9nLL5 
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