Birdwatch Note Rating
2023-04-07 21:46:25 UTC - HELPFUL
Rated by Participant: FEA992A7F7F5505FD53DC8F9BE3845DB2F8C7044376917D7C12A7EB5F6E8E2E8
Participant Details
Original Note:
Vaccines normally require a study on their efficacy before being approved. Independent governments and health agencies all over the world tracked the efficacy of the vaccine over time, taking into account factors such as new variants originally not known. https://www.nejm.org/doi/full/10.1056/nejmoa2110345
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