For much of the 20th century, infantile paralysis, or polio, was a public health crisis in the United States. In 1916 alone, polio took the lives of six thousand Americans, and left thousands more paralyzed. But in 1954, after several years of tireless research, Jonas Salk developed a vaccine that would make polio an afterthought. In this episode, Mrs. Allgood and Mr. Rixon will explore the life of Jonas Salk, the science of polio and its impact on public life, how a president raised awareness around the disease, and how Salk became a national hero.