Birdwatch Note Rating
2024-12-07 18:17:31 UTC - HELPFUL
Rated by Participant: C34CDA0474D210982BD627406A36E162A7101017979144A36A01DDB18D567961
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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