Kindergarten Vaccination Rates Slip Again as Exemptions Hit Record
Childhood vaccination coverage among US kindergartners declined again in the 2025-26 school year, according to new CDC data reported by Becker's Hospital Review. Coverage for the measles, mumps, and rubella (MMR) vaccine dropped to 92.4%, down slightly from 92.5% a year earlier and below the 95% threshold public health officials say is needed to prevent community spread.
The share of children claiming exemptions climbed to a record 4.2%, continuing a trend that has eroded coverage since the pandemic. When coverage falls under 95%, herd immunity weakens and the risk of outbreaks for diseases like measles rises, especially in pockets where exemption rates cluster well above the national average.
For hospitals and health systems, sustained declines translate into higher odds of vaccine-preventable outbreaks, added strain on pediatric and emergency capacity, and renewed pressure on public health agencies to rebuild confidence. The data underscores how far coverage has drifted from pre-pandemic norms and how difficult reversing the slide has become.
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