Jonas Salk lived in fear of polio eradicated polio Dr. Jonas Salk announced his polio vaccine to the public oral polio vaccine lived in fear of polio Source Dr. Jonas Salk announced his polio vaccine to the public eradicated polio 1953 Salk announces polio vaccine-HISTORY oral polio vaccine polio disease Source test cases for the new vaccine Franklin Delano Roosevelt fell ill oral polio vaccine oral polio vaccine Salk vaccine Vermont back in 1894