Vaccines have contributed to a significant reduction in many childhood diseases, such as diphtheria, measles, and whooping cough. Other diseases, such as polio and smallpox, have been eliminated in the United States due to effective vaccines. It is now rare for children in the United States to experience the devastating and often deadly effects of these illnesses that were once common. Infant deaths due to vaccine preventable childhood diseases have nearly disappeared. Recently, parents have been reluctant to vaccinate their children, are there diseases that are "coming back" due to this trend? Pediatrician Dr. Emily Edwards, MD, MPH explains the importance and benefits of vaccinations for children.