Full Breakdown
National Kindergarten Vaccination Rates Slip as Exemptions Reach Record High
8/22/2026, 8:42:21 PM
Core Event
On August 17, the Centers for Disease Control and Prevention (CDC) released a report showing that coverage for the measles-mumps-rubella (MMR) vaccine among U.S. kindergarteners fell to 92.4 % for the 2025–26 school year, down from 92.5 % the prior year. At the same time, the share of children with a medical or religious exemption rose to 4.2 %, up from 3.6 %—the highest single-year increase on record. The shift follows an executive order signed on August 10 by President Donald Trump that calls for a reduction in the number of routine childhood vaccines and proposes splitting the combined MMR shot into three separate injections.
Background & Context
Vaccination has prevented millions of deaths; the World Health Organization estimates that measles vaccination alone saved 59 million lives between 2000 and 2024. The U.S. target for herd immunity against measles is 95 % coverage, a level not reached nationally in 2025–26. State immunization requirements have historically driven high uptake, but recent years have seen pockets of lower coverage in states such as Idaho, Ohio, and Hawaii. Anti-vaccine activism dating back to the discredited 1998 Wakefield study continues to influence public discourse, and the recent executive order has amplified controversy.
Data & Statistics
- 280,000 kindergarteners lacked documented MMR doses nationwide (CDC).
- National MMR coverage: 92.4 % (2025–26).
- National exemption rate: 4.2 % (record high).
- Hawaii: MMR coverage fell to 89.3 %; religious exemptions rose to 6.0 %.
- Maryland: MMR coverage 96.7 %, exemption rate 2.5 %.
- Iowa: about 5 % of kindergarteners missed the MMR vaccine, coinciding with a measles outbreak in southern Iowa.
Official Statements & Responses
- Hawaii state epidemiologist Dr. Sarah Kemble described the downward trend as “worrisome.”
- The American Academy of Pediatrics criticized the Trump executive order as “unscientific and dangerous,” stating that no new evidence justifies altering the established immunization schedule.
Criticism & Opposition
- Dr. Paul Offit called the administration’s approach “driven by anti-vaccine activist and science denialist” leadership and urged parents to vaccinate.
- Dr. Mysheika Roberts, Columbus public-health commissioner, noted that “autism” remains an unfounded concern linked to the MMR vaccine.
On-the-Ground Reports
- Hawaii’s Department of Health plans to expand school-based vaccination clinics and promote the Healthy Hawaii Partners Program.
- Maryland health officials confirmed 17 measles cases statewide but affirmed that the state’s immunization schedule will not change.
- Iowa health authorities reported a measles outbreak in the southern part of the state, underscoring the risk posed by the 5 % of kindergarteners lacking MMR protection.
Conflicting Reports & Gaps
- National MMR coverage is reported as 92.4 % (CDC) while Maryland records a higher 96.7 % rate, illustrating state-level variation.
- Exemption rates differ markedly: 4.2 % nationally, 2.5 % in Maryland, 6.0 % in Hawaii, and 3 % in Alabama. Sources do not provide a unified explanation for these disparities.
- The CDC’s brief statement downplays the decline, whereas multiple experts describe the trend as a “significant increase” in risk, indicating a gap between official framing and expert interpretation.
