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Dr. Doran Fink, FDA's Division of Vaccines Deputy Director, on instances of anaphylactic reactions to Pfizer's COVID-19 vaccine. "These cases underscore the need to remain vigilant during the early phase of the vaccination campaign." Watch full video: https://t.co/8Zdjz1CR2N https://t.co/b3BQsINkNB — PolitiTweet.org