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The Independent UK
The Independent UK
National
Eleanor Sly

New Omicron variants explained: Everything we know after Covid cases found in UK

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Two new sub-variants of Omicron are being investigated by the World Health Organisation (WHO) to assess whether or not they are more dangerous or infectious than the original strain.

A few dozen cases of the sub-variants are being tracked with BA.4 and BA.5, sister variants of the original BA.1 Omicron variant, added to the WHO’s list for monitoring.

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