Public health debates often sound abstract until policy decisions start to land in pediatric clinics, schools and family kitchens. Right now, recommendations are circulating within the Department of Health and Human Services to weaken the U.S. childhood vaccination schedule, expand nonmedical exemptions, or replace our evidence-based system with models from very different countries are being framed as “choice” or “freedom.”

But public health does not operate in slogans. It operates in systems. And when those systems are disrupted, risk does not disappear. It redistributes.

One recommendation gaining traction would replace the U.S. childhood vaccination schedule with Denmark’s. I understand the appeal. I am Danish. My father was a physician born and trained in Denmark (Danmark), and Denmark’s public health system is something to admire. It is well-funded, highly coordinated and built on a level of infrastructure and social trust that most countries aspire to.

But public health does not travel well without context. Vaccination schedules are not ideological statements. They are engineering solutions designed for specific environments. Trying to import Denmark’s schedule into the United States is like bolting a jet engine onto a toy plane. Both are designed to fly, but they operate under completely different assumptions about weight, speed, fuel and stability.

Denmark has universal health care, centralized patient tracking, robust prenatal........

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