Module 2

What are vaccines, how are they developed, and how are COVID-19 vaccines being distributed in the US?

Unit A:

Vaccines 101

Learn how vaccines work to prevent disease and the basics of clinical trials

Unit B:

The Regulatory Process

Learn about approvals and emergency use authorizations

Unit C:

Safety and Efficacy

Learn about the process to ensure COVID-19 vaccines are safe and effective

Unit D:

COVID-19 Vaccines in the US

Learn about the rollout of approved COVID-19 vaccines

By the end of this module, you will be equipped to:


  • Describe how vaccines work

  • Define vaccine efficacy and effectiveness

  • Summarize the clinical trial phases for vaccines

  • Describe both typical and accelerated clinical trial and regulatory timelines

  • Describe emergency use authorizations and the vaccine approval process

  • Summarize currently available COVID-19 vaccines and how they are being rolled out in the US

Unit A: Vaccines 101

Module 2 Unit A: Vaccines 101


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Unit B: The Vaccine Regulatory Process

Unit C: Understanding Vaccine Safety and Efficacy

Unit D: COVID-19 Vaccines in the US

Supplemental Videos