Public health experts warn any delay to the newborn dose of the hepatitis B vaccine could threaten decades of progress.

RFK Jr.'s vaccine panel is considering a return to a public health strategy that was abandoned more than three decades ago.

A federal vaccine advisory committee this week is expected to discuss whether newborns should still get the hepatitis B vaccine — the first shot found to prevent cancer.

Vaccine advisers appointed by Health Secretary Robert F. Kennedy Jr. are on the verge of ending the practice of vaccinating all newborns against hepatitis B, which would represent a betrayal of a key Republican senator.