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by genewitch 5 days ago
> Similar vaccine efficacy (generally 90 to 100%) was observed across subgroups defined by age, sex, race, ethnicity, baseline body-mass index, and the presence of coexisting conditions.

https://www.nejm.org/doi/pdf/10.1056/NEJMoa2034577

also my source was i was cognizant during the 2020-2023 years and paying very close attention to every presser. the headlines comport with my memory of the reporting and the timeline of the efficacy decay.