CDC kindergarten vaccination data for the 2025-2026 school year indicate coverage rates for MMR, DTaP, polio, and varicella vaccines fell in more than half of states, with national rates at 92-92.4 percent. Exemptions from one or more vaccines increased in 41 states and D.C., reaching 4.2 percent nationally. Approximately 280,000 kindergartners lacked full MMR documentation and 155,000 held exemptions.