Birdwatch Note Rating
2024-12-07 16:57:22 UTC - HELPFUL
Rated by Participant: B4130C98768E7AC236A3BB67FBB9F1654A69BA39E7D410491CE52CEC31EF876D
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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