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Pfizer/BioNTech says three doses ‘effective’ against Omicron
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Pfizer/BioNTech says three doses ‘effective’ against Omicron

Credit: Pixabay/CC0 Public Domain Two doses of the BioNTech and Pfizer coronavirus vaccine may not be enough to protect against the Omicron variant, the companies warned Wednesday, but stressed it was “still effective” after a third jab. Omicron has caused global concern over signs that it can transmit faster than previous strains and fears that...