In the United States, the BA.2 sub-lineage of the Omicron variant has accounted for nearly three-quarters of new Covid-19 infections.
In the United States, the BA.2 sub-lineage of the Omicron variant has accounted for nearly three-quarters of new Covid-19 infections, stated the US Centers for Disease Control and Prevention (CDC). The BA.2 variant represented 74.4 per cent of the new Covid-19 cases in the country for the week ending April 16, slightly down from 75.5 per cent a week prior, Xinhua news agency reported, citing the CDC data.
The variant has been steadily rising in proportion due to its increased transmissibility compared to the original Omicron strain.
Source-IANS