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Pfizer asks US to allow 4th COVID vaccine dose for seniorsMarch 16, 2022
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Pfizer asks FDA to OK COVID-19 booster shots for all adultsNovember 9, 2021
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Pfizer says COVID-19 pill cut hospital, death risk by 90%November 5, 2021
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FDA says Pfizer COVID vaccine looks effective for young kidsOctober 23, 2021
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Next on FDA's agenda: Booster shots of Moderna, J&J vaccinesOctober 12, 2021