Birdwatch Note Rating
2024-12-07 16:03:26 UTC - HELPFUL
Rated by Participant: 589C3F84897CE473C4D1B2545E19A318242993CF324C3E768E4619DFB1DA0079
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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