Birdwatch Note Rating
2024-12-07 16:30:12 UTC - HELPFUL
Rated by Participant: E2D18394B3CA81FD83159D374720D9EFC9E623146DC0658A24EB58D400289E23
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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