1Some people have vocally opposed vaccines ever since they were first invented. In the 20th century, the anti-vax movement gained steam as celebrities such as Jenny McCarthy spread false information about their link to autism. The COVID-19 pandemic thrust the issue into the spotlight, and misinformation spread on social media helped turn many people against vaccination. This volume examines the scientific facts about vaccines, dispelling the myths and rumors about their efficacy and safety. In-depth fact boxes, detailed graphic organizers, and a glossary of new terms give readers a deeper understanding of this crucial issue.