World Health Organization (WHO) in the Technical Manual „Water, sanitation, hygiene and waste management for COVID-19” of March 19, 2020 shows that COVID-19 is extremely sensitive to UV light.
www.who.int/publications-detail/water-sanitationhygiene-and-waste-management-for-covid-19
According to the WHO position, the virus is completely inactivated when exposed to type C
ultraviolet (UV-C) light at 254 nm.
Because UV-C light provides a non-contact method that uses energy to disinfect surfaces, it can be effectively used in areas that are not suitable or difficult to clean with chemical surface disinfectants.
It is also useful for disinfecting electronics and other objects and materials that should not be exposed to liquids.
Absorption causes genetic damage to the virus
by producing reactive oxygen species that oxidise the alkali and break the RNA and DNA strands.
In the Communication of the Chief Sanitary Inspector of March 4, 2020 we read that: „the virus is covered with a thin layer of fat, which is destroyed by detergents, soap, disinfectants, UV rays”.
There are three different types of ultraviolet rays. (UVA, UVB and UVC) The first two types are known even to beach and solarium visitors.
The third type of ultraviolet UV-C radiation does not reach the Earth’s surface. It is absorbed by the earth’s atmosphere.
It is UV-C that has a bactericidal, fungicidal and virucidal effect.
LIGHT IS ABSORBED BY THE RNA AND DNA OF THE VIRUS CAUSING THEIR DECAY
