Learn about the story of Óscar de los Santos, who lived with polio for 85 years

"The best protection against polio is the vaccine, which was first offered in 1950," says Dr. José Romero, director of Immunizations and Respiratory Diseases at the CDC.

He knows the story of Óscar de los Santos, who lived with polio from the age of two until his death, at 87, last August.