People spend approximately 90 percent of their time indoors where most respiratory infections—a leading cause of death ...
"Conventional UV light has been used widely in hospitals and prisons ... Far UV-C has a shorter wavelength (222 nm) than conventional germicidal UVC light (254 nm) and cannot penetrate or harm ...
UV-C light, a type of ultraviolet radiation with wavelengths between 200-280 nanometers, has been widely recognized for its germicidal ... has long been used in healthcare and water treatment ...