COVID-19: Still unclear if vaccines need tweaking to address Omicron variant, EMA says

The European Medicines Agency (EMA) is prepared for the possibility that COVID-19 vaccines may need to be tweaked to fight the new Omicron variant, although “there is no answer yet” that it will be necessary, executive director Emer Cooke said on Tuesday. She said the agency first needs more data on vaccine efficiency, the variant’s transmissibility and the severity of disease it causes.

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