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Department of Homeland Security : Sunlight destroys the COVID-19 virus quickly

the staff of the Ridgewood blog

Ridgewood NJ, coronavirus is quickly destroyed by sunlight, according to new research announced by a senior US official on Thursday, though the study has not yet been made public and awaits external evaluation.

William Bryan, science and technology advisor to the Department of Homeland Security secretary, told reporters at the White House that government scientists had found ultraviolet rays had a potent impact on the pathogen, offering hope that its spread may ease over the summer.

It turns out there may be something to the old adage that “sunlight is the best disinfectant.” A recently leaked and unclassified government study shows promising data on the direct effect of sunlight on the deadly COVID-19 contagion. The study was conducted by the U.S. Department of Homeland Security’s (DHS) Science and Technology Department and is titled “S&T’s Research, Development, Testing and Evaluation (RDTE) Efforts on COVID-19.” The Department of Homeland Security has declined to comment on the leaked report that indicates that sunlight destroys the coronavirus in about three minutes.

The study found that the risk of “transmission from surfaces outdoors is lower during daylight” and under higher temperature and humidity conditions. “Sunlight destroys the virus quickly,” the briefing says.

The study tested how long the virus survives “in a droplet of saliva (e.g. from a cough/sneeze) and a dried droplet of saliva deposited on stainless steel in varying temperatures, humidity, and sunlight.”

What the research shows is quite encouraging, seeing as we are soon to enter warm summer months. Sunlight effectively killed the virus completely after three minutes, the study found. To be specific, full intensity sunlight killed the virus in roughly two minutes, while under “quarter intensity” of sunlight, the virus lived for four minutes. By comparison, when left in the dark under the same conditions, the COVID-19 contagion lived for 60 minutes.

Records from the 1918 Spanish Flu pandemic suggest one technique for dealing with influenza .  Medics found that severely ill flu patients nursed outdoors recovered better than those treated indoors. A combination of fresh air and sunlight seems to have prevented deaths among patients; and infections among medical staff. There is scientific support for this. Research shows that outdoor air is a natural disinfectant. Fresh air can kill the flu virus and other harmful germs. Equally, sunlight is germicidal and there is now evidence it can kill the flu virus.

 

 

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