Birdwatch Note Rating
2024-12-07 16:05:44 UTC - HELPFUL
Rated by Participant: 5E103BA32D2968FFBD4081C2D76D608B075D76FA6F119FA11D7DA1FA2C8423E0
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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