US President Donald Trump has signed an executive order calling for revamped childhood ...
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Trump's executive order pushes spacing out childhood vaccines into separate visits — a long-held claim experts have repeatedly rejected. What happens when policy outruns the evidence?
Authority BiasBackfire EffectPrincipal-Agent ProblemNudge Theory

Theory Briefing
- Trump signed an executive order calling for a revamped childhood vaccine schedule, giving the idea official policy weight.
- The order promotes spacing out childhood shots into separate visits, a recommendation health authorities have long rejected as unsupported.
- Lending presidential authority to a discredited medical claim raises questions about how official endorsement shapes public trust in vaccines.