There's a new COVID-19 variant in India. How worried should we be?

'This is a variant of interest we are following,' Maria van Kerkhove, the World Health Organization's technical lead on COVID-19 told reporters. 'Having two of these mutations, which have been seen in other variants around the world, is concerning,' she added, going on to say that 'there was a similarlity with mutations that increase transmission as well as reduce neutralization, 'possibly' stunting the ability of vaccines to curb them.'