Whose vaccine is used to prevent polio?

Jonas Salk developed the first successful inactivated poliovirus vaccine, which was announced in 1955 after major field trials. The vaccine dramatically reduced polio cases in countries that used it widely. Later, Albert Sabin developed the oral live attenuated polio vaccine, which became important for mass immunization campaigns. Together, these vaccines transformed polio from a feared epidemic disease into one targeted for global eradication.