Omicron sub-variant BA.2 accounts for about 55% of COVID-19 variants in US: CDC - CNA

The US national public health agency said on Tuesday (Mar 29) that BA.2 sub-variant of Omicron was estimated to account for more than half the coronavirus variants in the country. A resurgence of COVID-19 cases in parts of Asia and Europe has raised concer…

The US national public health agency said on Tuesday (Mar 29) that BA.2 sub-variant of Omicron was estimated to account for more than half the coronavirus variants in the country. A resurgence of CO… [+1310 chars]

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