Birdwatch Note Rating
2023-04-07 22:30:56 UTC - HELPFUL
Rated by Participant: 7C318A55DA967AF307404F852FA3E254598BEE744D950C842E03E0C6CD019D14
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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