Kindergartners' MMR vaccination rates have dropped from 92.7% to 92.5% in the 2024-2025 school year, leaving an estimated 286,000 children unprotected against measles. This continues a downward trend since 2019, with rates falling from 95%. The decline is attributed to both pandemic-related disruptions and rising anti-vaccine sentiment fueled by misinformation, including from prominent figures like Robert F. Kennedy Jr. Measles outbreaks have surged, reaching a 33-year high in 2025.

Prepared by Olivia Bennett and reviewed by editorial team.