Leona Baumgartner as the cornerstone to the creation of a healthy community, beginning with her work as district health officer in planning classes and clinics. Baumgartner was also an early advocate of the vaccine developed by Jonas Salk as a method of immunization against polio and the fluoridation of water as a bulwark against dental disease. Baumgartner was elected a Fellow of the American Academy of Arts and Sciences in 1969. She was awarded the Public Welfare Medal from the National Academy of Sciences in 1977. Her other awards include the Sedgwick Medal, the Albert Lasker Public Service Award, the Elizabeth Blackwell
Jonas Salk assembled, devoted himself to this work for the next seven years. The field trial set up to test the Salk vaccine was, according to O'Neill, "the most elaborate program of its kind in history, involving 20,000 physicians and public health officers, 64,000 school personnel, and 220,000 volunteers." Over 1,800,000 school children took part in the trial. When news of the vaccine's success was made public on April 12, 1955, Salk was hailed as a "miracle worker" and the day almost became a national holiday. Around the world, an immediate rush to vaccinate began, with countries including Canada, Sweden, Denmark, Norway,