How federal vaccine recommendations become state school-entry requirements — a state-by-state statutory guide
While the federal government (via the CDC and ACIP) issues vaccine recommendations, the Tenth Amendment reserves the authority to set school-entry requirements to the states. However, the legal mechanism by which a state adopts a federal recommendation varies significantly across the country.
A citizen in one state may live under a system where appointed health officials update requirements through administrative rulemaking, while a citizen in another state lives under a system where elected legislators must vote on every change to the school-entry list.
To provide clarity on this governance structure, this database categorizes all 50 states and the District of Columbia into one of three statutory frameworks based on direct review of each jurisdiction's statutes and administrative codes.
State law directly ties school requirements to current ACIP recommendations without requiring any secondary state-level action. This is the narrowest and rarest category. Our research found that no state currently meets this strict standard — every state requires some form of administrative or legislative action.
The state legislature has delegated authority to a health department, board of health, or commissioner to set and update school vaccine requirements. The department may be required to consider ACIP recommendations, but a state-level administrative action (such as updating the administrative code) is required before any change takes effect. This is the most common framework.
The state legislature retains direct control over the school-entry vaccine list. New vaccines cannot be added by a health department or board — they require a formal bill or statutory amendment passed by elected officials.
This database was compiled through direct review of statutes and administrative codes for all 50 states and the District of Columbia, cross-referenced against the Association of State and Territorial Health Officials (ASTHO) legislative impact reports, the National Conference of State Legislatures (NCSL) exemption data, and the CDC Public Health Law Program school vaccination assessment.
1. No true auto-adoption exists. Every state requires some form of administrative or legislative action before a federal vaccine recommendation becomes a school-entry requirement. The concept of automatic ACIP incorporation is not supported by the statutory evidence.
2. 47 of 51 jurisdictions use administrative authority. In the vast majority of states, a health department, board, or commissioner holds delegated power to update school vaccine requirements — but must act to do so.
3. Four jurisdictions require legislative action. Idaho, Montana, Ohio, and West Virginia require statutory changes to modify the school-entry vaccine list.
4. The 2025–2026 period brought significant mechanism shifts. Several states modified their adoption frameworks in response to federal schedule changes, with some states explicitly shifting authority from administrative bodies to legislatures.
Use the search bar to find your state, or filter by adoption mechanism category or exemption type. Click any state row to expand the full summary with statutory citations.
This database analyzes school-entry immunization requirements only (Phase 1). It does not cover childcare, college, or healthcare worker requirements. Exemption data is captured as a snapshot (medical, religious, philosophical) without procedural friction scoring.
Confidence levels are assigned to each entry: High confidence indicates clear primary sources with unambiguous mechanisms. Medium confidence indicates correct classification but with specific ACIP reference language still pending verification in the state's administrative code.
All entries are current as of April 2026. State laws change frequently. Users should verify current requirements with their state health department.