sentences:  Its hugely successful fund-raising campaigns collected hundreds of millions of dollars—more than all of the U.S. charities at the time combined (with the exception of the Red Cross).By 1955 the March of Dimes had invested $25.5 million in research; funding both Jonas Salk's and Albert Sabin's vaccine development; the 1954–55 field trial of vaccine, and supplies of free vaccine for thousands of children.In 1952, during the worst recorded epidemic, 3,145 people in the United States died from polio.