Birdwatch Note Rating
2024-12-07 16:30:36 UTC - HELPFUL
Rated by Participant: 057FF18700CDF0F7409AF9E9CD43042860C045B21D9CBAF0A94AC342A10810C7
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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