Birdwatch Note Rating
2024-12-07 23:02:31 UTC - HELPFUL
Rated by Participant: 77F3621FF8FA173FA4ACD668DF010C276EAE695AC375074FD5F7766FA71A337C
Participant Details
Original Note:
The first generation of vaccines is tested against a placebo but future generations of the same vaccine are tested against their previous generation, because it is not ethical to expose patients to vaccine preventable diseases once vaccinations are available. https://www.canada.ca/en/public-health/services/immunization/national-advisory-committee-on-immunization-naci.html
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