Birdwatch Note Rating
2024-12-07 16:23:34 UTC - HELPFUL
Rated by Participant: 5D72735870793DA61F0953E904CBCF4D876525E2E99EEB5667722C5F2045F85B
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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