UV-light sterilisation: A formidable weapon in the war on Covid-19?

Research shows that a specific band of UV lights can disinfect surfaces with 99% effectiveness

Even as Covid-19 cases continue to rise, India has lifted the lockdown to resume economic activity. The precarious situation makes a case for further precaution--wearing masks and social distancing. But it may not be enough.

Now, an old invention is making a comeback to help fight the novel Coronavirus’ alarming spread. Ultraviolet (UV) lights have been in use for quite some years as a means of sterilisation. UV-powered sterilising boxes meant for disinfecting surgical equipment have been in the market. Now UV lights are being expanded to be used en masse in ways not seen before.

For their disinfection properties,