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Story summary
- President Donald Trump signed an order to split the MMR vaccine and require separate appointments for childhood immunizations nationwide.
- Department head Robert F. Kennedy Jr., an anti-vaccine activist, oversees the plan.
- Dr. Molly O’Shea warns the order will cause confusion and lower vaccine uptake.
- Data show kindergarten vaccination rates fell while exemptions hit a record high in 2024-25.
- Infectious-disease expert Michael Osterholm says the messaging erodes confidence and endangers children.
