ALSO READ: COVID-19 cases on rise in 110 nations, driven by 2 Omicron sub-variants: WHO According to data from the Centre for Disease Control and Prevention, the BA.4 and BA.5 Omicron subvariants are now dominant in the United States.
The CDC had earlier said that the fast-spreading Omicron sub-variants BA.4 and BA.5 together are estimated to make up half of the coronavirus cases in the United States.
Till 25 June, BA.5 made up 36.6 per cent of the total coronavirus cases in the US while BA.4 accounted for 15.7 per cent, together accounting for about 52 per cent of new cases in the US.
On 29 June, the World Health Organization also said that cases are being driven in 110 countries mainly by two fast-spreading Omicron sub-variants.