Producing Prevention: How Vaccines Are Developed
How Vaccines Work in the Body
Vaccine Myth Busting
- “COVID-19 Vaccine Myths vs. Facts,” GW School of Medicine & Health Sciences. June 3, 2021. Accessed June 28, 2021.
- “Myths and Facts about COVID-19 Vaccines,” Centers for Disease Control and Prevention. June 23, 2021. Accessed June 28, 2021.
- “COVID-19 Vaccine Myths,” (PDF, 189KB), American Academy of Family Physicians. Accessed June 28, 2021.
- “Myths and facts about immunization,” (PDF, 150KB), World Health Organization Regional Office for Europe. Accessed June 28, 2021.
The Path to Prevention
- Phase I administers the candidate vaccine to a small group (fewer than 100 people) with the goal of determining whether the candidate vaccine is safe and to learn more about the responses it provokes among test subjects.
- Phase II, which includes hundreds of human test subjects, aims to deliver more information about safety, immunogenicity, immunization schedule and dose size.
- Phase III, which can include thousands or tens of thousands of test subjects, continues to measure the safety (rare side effects sometimes don’t appear in smaller groups) and effectiveness of the candidate vaccine.