CDC delays release of report showing COVID vaccine cut hospital visits

The acting CDC director paused publication of a study showing last season's Covid shots reduced emergency department visits and hospitalizations. The director cited methodology concerns after Trump’s NIH chief objected to the report. The study used the test-negative design, a method long used to measure vaccine effectiveness and published in top journals. The delay matters because it stalls public health guidance, risks politicizing scientific review, and could weaken public confidence in vaccines.