How Long Did It Take To Develop The Polio Vaccine?
How Long Did It Take To Develop The Polio Vaccine? The first polio vaccine, known as inactivated poliovirus vaccine (IPV) or Salk vaccine, was developed in the early 1950s by American physician Jonas Salk. This vaccine contains killed virus and is given by injection. The large-scale use of IPV began in February 1954, when it