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This August 2022 photo provided by Pfizer shows vials of the company's updated COVID-19 vaccine during production in Kalamazoo, Mich. U.S. regulators have authorized updated COVID-19 boosters, the first to directly target today's most common omicron strain. The move on Wednesday, Aug. 13, 2022, by the Food and Drug Administration tweaks the recipe of shots made by Pfizer and rival Moderna that already have saved millions of lives. (Pfizer via AP)

This August 2022 photo provided by Pfizer shows vials of the company's updated COVID-19 vaccine during production in Kalamazoo, Mich. U.S. regulators have authorized updated COVID-19 boosters, the first to directly target today's most common omicron strain. The move on Wednesday, Aug. 13, 2022, by the Food and Drug Administration tweaks the recipe of shots made by Pfizer and rival Moderna that already have saved millions of lives. (Pfizer via AP)

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