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Check out the companies making headlines in midday trading Monday:
Moderna — Moderna shares surged more than 9% after CEO Stephane Bancel said Monday it will take months to distribute a Covid vaccine specifically targeting the omicron variant, but a higher 100-microgram dose of the booster shot could be ready «right away.» Bancel said it will take at least two weeks to study how the new variant's mutations impact the efficacy of current vaccines.
Twitter — Shares of the social
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