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Pfizer CEO: Fourth dose of COVID vaccine may be needed sooner than expected because of Omicron variant

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Allen J. Schaben / Los Angeles Times via Getty Images

Pfizer CEO Albert Bourla said a fourth dose of the COVID-19 vaccine may be needed sooner than expected because of the Omicron variant.

Bourla previously projected that a fourth shot might be needed 12 months after the third dose. However, he announced on Wednesday that the Omicron variant could accelerate the timeline for a fourth dose.

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