Birdwatch Note Rating
2023-02-02 01:53:20 UTC - HELPFUL
Rated by Participant: A56B2F851F9462D6776409BF85616F3C23CC4AE57DAC2E1F2FE387FCB1FCB605
Participant Details
Original Note:
Pfizer's Covid-19 vaccine underwent a rigorous 3 phase trial. Pfizer's phase three (safety and efficacy) clinical trial began in late July 2020 and the results were published in December 2020, and showed adequate information for the FDA to approve it. https://research.northeastern.edu/heres-what-it-takes-to-test-a-covid-19-vaccine-with-clinical-trials/
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