All those vaccinations will be the inactivated polio vaccine, since it's the only polio vaccine in use in the USA since 2000: https://www.cdc.gov/vaccines/vpd/p

All those vaccinations will be the inactivated polio vaccine, since it's the only polio vaccine in use in the USA since 2000: https://www.cdc.gov/vaccines/vpd/polio/index.html https://www.cdc.gov/vaccines/vpd/polio/index.html