President-elect Trump praises polio vaccine, but lawyer Aaron Siri petitions FDA to revoke approval, citing safety concerns. Siri works closely with Trump's HHS pick, RFK Jr., who advocates for informed vaccine choice. FDA is reviewing the petition, and if confirmed, Kennedy could intervene in the review process. Polio vaccination is hailed as a global public health achievement, with no serious adverse events documented for the inactivated vaccine used in the US.