Birdwatch Note Rating
2024-12-07 18:09:12 UTC - HELPFUL
Rated by Participant: 496EA8FA28450DEE668F260282F92D969095193ADF9586E90EC27ED8747577DA
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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