Dr. Jennifer L. Howse, president fo the March of Dimes, speaks on the 50th anniversary of the first Polio vaccine on April 26, 2004, at Franklin Sherman Elementary School in McLean, Va., the place where the first shots were given. The first Salk vaccine inoculations were given on April 26, 2004, and eventually led to the erradication of Polio in most of the world. (UPI Photo/Roger L. Wollenberg)