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www.cidrap.umn.edu/news-perspective/2022/08/study-pfizer-... Study: Pfizer COVID vaccine efficacy wanes 27 days after dose 2 in teens A new study finds waning Pfizer/BioNTech COVID-19 vaccine ...
www.cidrap.umn.edu/news-perspective/2022/08/study-pfizer-... Study: Pfizer COVID vaccine efficacy wanes 27 days after dose 2 in teens A new study finds waning Pfizer/BioNTech COVID-19 vaccine ...
https://www.youtube.com/watch?v=5GL9JoH4Sws