Boris Johnson claims new Covid strain may be more fatal - but UK CMO warns data 'not yet strong' enough
B117 emerged in the the south east of the country last September.
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B117 emerged in the the south east of the country last September.
The UK and South African variants have been recently confirmed in Ireland.
It was identified in fewer than 10% of swabs in a small batch anaylsed.
Both variants are feared to be more transmissible, and research is ongoing.