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Explainer: How new Omicron variants are causing fresh fears for winter Covid surge

Scientists investigating if some new form might be fuelling infection

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A dose of the new Moderna spikevax autumn Covid booster vaccination. Photo: PA

A dose of the new Moderna spikevax autumn Covid booster vaccination. Photo: PA

A dose of the new Moderna spikevax autumn Covid booster vaccination. Photo: PA

The autumn Covid-19 wave is climbing steadily with fears of another winter surge.

Inevitably scientists are investigating if some new form of variant might be increasing infections.


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