New research by two retired US government scientists claims that UV rays in summer sunlight can inactivate 90 per cent of the new coronavirus in just 11 to 34 minutes. The former US Army, FDA and NIH researchers blame lockdowns for the increased Covid-19 activity as people were forced away from sunlight exposure. The findings were published in the journal Photochemistry and Photobiology. Ultraviolet rays, a form of radiation the sun emits, is being used to disinfect surfaces. However, health experts say that while this may be true, it will have little impact on virus spread. The real risk is not virus from surfaces but from people's mouth and nose that is released into the air and enters someone else's body within seconds.