The first inactivated polio vaccine (IPV) was developed in the 1950s by Jonas Salk and tested in the historic polio vaccine trial sponsored by the March of Dimes. Salk grew the polio virus on monkey kidney cells which inactivated the virus using formaldehyde. This purified inactivated polio vaccine (IPV) provided protection against polio infection but did not prevent the virus from sp... https://www.newswirestats.com/ipv-vaccine-market-analysis/