The Department of Health and Human Services said on January 5, 2026 that CDC leadership signed a decision memorandum accepting recommendations from an assessment of U.S. childhood immunization practices.

HHS tied the move to a presidential memorandum issued on December 5, 2025 directing a review of vaccination schedules used by peer developed countries and the supporting scientific evidence.
The announcement framed the effort as an update process intended to compare international approaches while maintaining access to vaccines available to Americans.
- HHS announcement date: January 5, 2026.
- Action followed a December 5, 2025 presidential memorandum on reviewing immunization practices.
- CDC memo said it accepted recommendations from a scientific assessment.