A highly infectious variant of COVID-19 that has spread around the world since it was first discovered in Britain late last year is between 30 per cent and 100 per cent more deadly than previous dominant variants, researchers said on Wednesday.
A highly infectious variant of COVID-19 that has spread around the world since it was first discovered in Britain late last year is between 30 per cent and 100 per cent more deadly than previous dominant variants, researchers said on Wednesday.