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Differences in Antigenic Structure of Inactivated Polio Vaccines Made From Sabin Live-Attenuated and Wild-Type Poliovirus Strains: Impact on Vaccine Potency Assays.
removed from the live-attenuated oral polio vaccine (OPV). This change implies a need to improve global coverage through routine immunization with inactivated polio vaccine (IPV), to ensure type 2 immunity. ...