Fresh Air is gaining as much importance as hand washing, clean water etc. It cannot be neglected in Total Hygiene Concepts. Viruses have been proven to be transported by air.
Niels Ryberg Finsen (1860-1904) becomes the first person to use UV rays in the treatment of diseases. UV-C was used in 1908 to disinfect Marseille, France’s municipal water supply. Westinghouse developed the first commercial UV-C germicidal lamps in the 1930s, used primarily in hospitals.