On March 26th 1953, American medical researcher Dr Jonas Salk made public that a vaccine he had developed for poliomyelitis had been successfully tested. The crippling disease had reached epidem9ic proportions in 1952, with 58,000 new cases reported in the Unites States, of which over 3,000 had died. The disease is also called "infant paralysis" … Continue reading March 26 1953 Jonas Salk Announces Polio Vaccine