Birdwatch Note Rating
2024-12-07 15:55:39 UTC - HELPFUL
Rated by Participant: 926A68BBE70ADA3980BCA82E3B10AE5756596564FBC64D4D29900016B6FBF905
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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