Birdwatch Note Rating
2024-12-07 16:20:00 UTC - HELPFUL
Rated by Participant: 26012DB41998749E13092F4B8EC6D51209C7B84643ACA81CE448D595A34F54E8
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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