World Polio Day

Polio nearly killed the 20th century. Vaccines nearly killed polio.

World Polio Day on October 24 marks the birthday of Jonas Salk, who developed the first successful polio vaccine, announced in 1955. Polio, which caused paralysis and death primarily in children, was one of the most feared diseases of the 20th century. The global Polio Eradication Initiative, launch