National vaccination rates for US kindergarteners dropped again in the 2025–2026 school year, according to CDC data released Monday. The measles, mumps, and rubella (MMR) coverage fell to 92.4 percent from 92.5 percent the prior year, while DTaP coverage slipped to 92.0 percent from 92.1 percent.
The decline continues a multi-year trend since the 2019–2020 school year, when coverage stood near the 95 percent threshold needed to prevent outbreaks of vaccine-preventable diseases. Health officials have warned that sustained drops increase the risk of localized outbreaks, particularly for highly contagious diseases like measles.
The CDC did not publish a full report, instead releasing the data online without additional analysis. Public health advocates are expected to highlight the trend as a growing concern for community immunity.
