Vaccination is one of the most successful public health interventions our world has ever seen. Since we started vaccinating more than 200 years ago, we have seen the elimination or control of diseases such as smallpox, polio, diphtheria, measles, and pertussis. Despite these successes, we are starting to see increased concern or hesitancy about vaccines. Understanding that vaccination can be a complex topic, this Teach-Out seeks to bring learners like you together, from all over the world, to: Learn about vaccines Discuss your experiences Consider personal actions you can take to apply this knowledge In this Teach-Out you will learn from vaccine experts who understand this complex issue through the lenses of epidemiology, medicine, nursing, journalism, sociology, policy, economics, and parenthood. This Teach-Out will address the following questions: What is a vaccine? How does it work? What are the common diseases that vaccines prevent? What are the common myths associated with vaccines? Why do people think vaccines cause autism? How do we more effectively communicate about vaccines? What is vaccine hesitancy? What are the economic implications of vaccines?