Birdwatch Note Rating
2024-12-07 16:13:05 UTC - HELPFUL
Rated by Participant: 429746873DBBBDE35D410A1E663169637514269DE347C931F8D716781A32CA2B
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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