Most Americans aren't anti-vaccine. They're uncertain — and that's a growing public health challenge

A 2026 survey found that a majority of Americans express uncertainty about vaccines rather than outright opposition, according to public health researchers tracking vaccination attitudes. The uncertain group represents a shift from previous years when Americans more clearly identified as either pro-vaccine or vaccine-skeptical. Health officials have identified vaccine hesitancy among the undecided population as a complicating factor in reaching vaccination coverage targets.

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