25 Stories That Will Restore Your Faith In Humanity! July 14, 2016 Main 2. Jonas Salk Source The first successful poio vaccine was discovered and developed by the American medical researcher and virologist Jonas Salk. He had no interest in personal profit, so he didn’t become rich from the vaccine. 2 of 4 Next Use your ← → (arrow) keys to browse Tweet Pin It Related Posts ken Animals, Main 1308219 Views A Bizarre Creature Was Rescued From a Sidewalk, What It Would Grow Into Was Astonishing! Nenad Main 9313 Views Loyal Dog Stands Guard When Owner Passes Out!