The middle state has 91.5% of its kindergartners vaccinated against measles, 0.9 points below the national 92.4%

What this measures

• What it measures. The share of kindergartners with the doses of measles, mumps and rubella vaccine their state requires, as each state's immunization program reports it; about 95% is the level usually needed to stop measles spreading. Unit: %.
• Source. CDC National Center for Immunization and Respiratory Diseases, Vaccination coverage and exemptions among kindergartners (SchoolVaxView): SchoolVaxView MMR coverage among kindergartners, by school year (2025 = 2025-26) (U.S. public domain).
• Read through healthdata.dev, dataset kindergarten-vaccination, version 2026-11-13.67616c8ca6; its 1 input files from the CDC National Center for Immunization and Respiratory Diseases are named with their sha256 in this page’s data, and the site’s checks recompute every figure from them. Every place at once: the healthdata.dev bulk file (live, no key).
• Yearly: CDC adds a school year in the summer or fall after it starts; a year here is the school year it starts, so 2025 is 2025-26.
• Each state’s immunization program counts its own kindergartners and reports to CDC. Most count every child, but some count a sample or only the schools that answer, and a few count few children: in 2025–26 Hawaii counted 12% and Delaware 13%. A year is the school year it starts, so 2025 is 2025–26. Montana has reported nothing since 2020–21. States set their own exemption rules and the doses they require. CDC gives no nonmedical exemption figure for California, Maine, New York and West Virginia, whose school vaccine laws allow only medical exemptions.
• Some states count a kindergartner as vaccinated only with every vaccine required for school entry, so their figure is that all-vaccines rate and runs below the true MMR share: Alabama until 2023–24, Delaware in 2011–12, 2012–13, 2013–14 and 2023–24, Florida in every year, Georgia since 2012–13, Iowa in every year, Kentucky in 2021–22, 2022–23 and 2023–24, Maryland in 2023–24, Mississippi in every year, New Hampshire in every year, New Jersey in every year, South Carolina in 2012–13, Tennessee until 2014–15, West Virginia in 2022–23, Wisconsin in 2020–21 and 2021–22 and Wyoming in 2020–21. A change is left blank where the two years were counted different ways.
• Built 2026-11-13.