Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Although the history of the anti-vaccination movement dates back to the introduction of the first vaccines in the early 19th century, today the debate is spreading all around the world via internet. During past decades, fear of vaccination has considerably grown and more and more parents decide not to vaccinate their children. Anti-vaccination advocates support the belief that vaccines cause autism and autoimmune disease and lead a campaign to stop the practice of systematic immunization of children. Learn more about vaccine controversies in this book.