Chickenpox: Dramatic success story for the vaccination program

U.S. deaths from chickenpox dropped to the lowest level ever after a vaccine to prevent the childhood disease was introduced in 1995, a study shows.

In the five years before the vaccine, chickenpox caused or contributed to an average of 145 deaths each year. That dropped to 66 in just a few years, researchers at the Centers for Disease Control and Prevention reported in Thursday's New England Journal of Medicine.