Birdwatch Note Rating
2024-12-07 15:50:59 UTC - HELPFUL
Rated by Participant: 045FAF4E8248252304EA4FB388C35BC45D398318556863252F2DB06EA59EEA70
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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