This study examined the microbicidal activity of 222-nm UV radiation (UV222), which is potentially a safer alternative to the 254-nm UV radiation (UV254) that is often used for surface decontamination.
A direct approach to prevent the transmission of airborne-mediated disease is inactivation of the corresponding airborne pathogens, and in fact the airborne antimicrobial efficacy of ultraviolet (UV) light has long been established.
Bus disinfection through UV lights. Following a guidance issued by the National Health Commission, a Shanghai public transport company uses UV light on the bus interiors and exteriors as a way of disinfection. According to the company, the process takes 5 to 7 minutes per bus and kills more than 99.9 per cent of viruses, as reported by AFP.