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Haber Kaynağı: Çeşitli Haber Siteleri Biden Administration Plans for Booster Shot Campaign in September A top F.D.A. regulator cited compelling data for redesigned coronavirus vaccines from Pfizer-BioNTech and Moderna. https://www.nytimes.com/2022/08/23/us/politics/covid-booster-shots-biden.html
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