Vaccinations have come to believe as the most effective, life-saving medical innovation of all time. They have cleared the way of numerous diseases, and they are saving the lives of children and adults every day from infectious diseases. With every lifesaving innovation, critics seem to be required to put doubt in people's mind. A new debate has risen from the minds of the skeptics, and the debate is costing people their lives. The book Vaccine, written by Mark Largent about the recent controversy, states that “about 40% of American parents today have chosen to delay certain vaccines or outright refuse to allow their children’s physicians to vaccinate their children” (Largent 1). Recently, more and more skeptics have created rising concerns