The Evidence On 4th Doses of Covid Vaccines & the Thorny Question of Age Thresholds – Absolutely Maybe Blog, by Hilda Bastian Related: U.S. approves second Covid-19 booster for people 50 and older and immunocompromised individuals. [Preprint] Retrospective cohort study: second booster vaccine and Covid-19 mortality in adults 60 to 100 years old. Among health […]

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