Ultraviolet-C ray lamps have long been used to kill bacteria, viruses and moulds, notably in hospitals and in the food-processing industry, but UVC rays are dangerous, and can be used only when no one is present.
Could a new type of ultraviolet lamps be used in stations, airplanes and schools to kill dangerous viruses, becoming a gamechanger in the COVID-19 fight?
The New York subway system, following the example of Chinese subways, plans to use ultraviolet lamps to disinfect its trains, but only during nighttime closures. In late April, President Donald Trump offered confusing remarks about somehow projecting ultraviolet rays into people’s bodies to kill the coronavirus.
The team next plans to test the lamps on viruses suspended in the air, as when an infected person coughs or sneezes.
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