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Manal Mohammed, Senior Lecturer, Medical Microbiology, University of Westminster

Another new COVID variant is spreading – here's what we know about omicron BA.4.6

Andrii Vodolazhskyi/Shutterstock

BA.4.6, a subvariant of the omicron COVID variant which has been quickly gaining traction in the US, is now confirmed to be spreading in the UK.

The latest briefing document on COVID variants from the UK Health Security Agency (UKHSA) noted that during the week beginning August 14, BA.4.6 accounted for 3.3% of samples in the UK. It has since grown to make up around 9% of sequenced cases.

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