Today my six-year-old son, David, started karate*. To most parents, such an occasion would be one of many proud events in the growth of their child; however, for my wife, Kathy, and me it was much more.

Rome, 1950. I was twenty-two and had been traveling through Europe for six weeks with Carol, my college roommate. We had another month remaining before returning to the United States.

“Polio Revisited examines the highly infectious viral disease that caused paralysis and in some cases death for ​thousands of people, nationally and internationally.” ​ David Wasser