The triumph over polio is one of the great success stories of modern medical science. Once among the most dreaded of childhood diseases, it has now been eradicated throughout most of the developed world. Though epidemics do still occur in the developing world, a global eradication campaign remains underway. A polio-free world is likely only a few years from becoming a reality.
One of the most famous people to have had polio was President Franklin Delano Roosevelt, who was diagnosed with the disease when he was 39. He is shown here at the Yalta Conference in 1945 with British Prime Minister Winston Churchill (left) and Soviet leader Joseph Stalin.