This book gives a detailed background on the controversial MMR vaccine, including an overview of the diseases its used to prevent, how it was developed, and the adverse reactions its been known to cause. Special attention is given to the controversial claims of a link between the vaccine to autism. Project Webster represents a new publishing paradigm, allowing disparate content sources to be curated into cohesive, relevant, and informative books. To date, this content has been curated from Wikipedia articles and images under Creative Commons licensing, although as Project Webster continues to increase in scope and dimension, more licensed and public domain content is being added. We believe