Hiroshima University researchers say Ultraviolet-C light with a wavelength of 222 nm effectively kills SARS-CoV-2. Other studies involving 222-nm UV-C have so far only examined how well it kills seasonal coronaviruses structurally similar to the SARS-CoV-2 but not on the COVID-19-causing virus itself. Operation at 222 nm is said to be safer than emitting light […]