Birdwatch Note Rating
2023-04-07 21:32:29 UTC - HELPFUL
Rated by Participant: 39FC64EE74C301D51DE58A5A3091860596E67848312E0E1A2063444E18296AF6
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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