A new variant of Covid-19 emerging around the world already accounts for almost one-fifth of cases in the United States, the Centers for Disease Control and Prevention (CDC) has warned.
Officially known as EG5, the strain accounted for 17.3 per cent of American cases as of 5 August, up from 7.5 per cent in the first week of July and surpassing a number of Omicron descendants like XBB.1.16 (15.6 per cent of cases), XBB.2.23 (11.2 per cent) and XBB.1.5 (10.3 per cent).
