States Reassessing Vaccine Policy and Public Health Powers
June 09, 2025 | Shalini Nair, Andy Baker-White
Immunization is a key pillar of public health, crucial for protecting communities and preventing infectious diseases from spreading. State and territorial health officials and their departments play critical roles in setting and implementing immunization requirements, managing disease surveillance and outbreak response, and ensuring access to vaccines. In recent years, however, the immunization landscape has evolved as legislative changes alter public health authority and access to vaccines. As these challenges persist, public health officials must be informed and prepared to navigate the dynamic policy environment to ensure immunization programs’ continued effectiveness at protecting public health.
The True Cost of Vaccine Skepticism and Misinformation
In the years since the pandemic, rates of routine vaccinations among U.S. children have steadily declined; there has simultaneously been an increase in non-medical exemptions. While reasoning behind personal decisions about vaccination are not always clear, increasing prominence of vaccine-related myths is a significant contributor to this phenomenon. Perhaps the most glaring consequence of this decrease is best illustrated by the 2025 measles outbreak and the first measles-associated deaths in more than a decade. Previously considered to have been eliminated, measles is now under threat of resurgence as vaccine rates fall below the thresholds to uphold herd immunity. Health officials are also seeing declines in coverage for several other vaccine preventable diseases like pertussis, mumps, hepatitis, and even polio.
Legislation Restricts Innovation and Sows Doubt About Vaccine Components
The use of mRNA technology expanded in 2020 following its breakthrough success in COVID-19 vaccines. These mRNA vaccines prevented more than 120 million additional COVID-19 infections and 3.2 million additional deaths. Researchers are currently assessing mRNA technology to address pandemic influenza, HIV, Zika, and even cancer.
During 2025 sessions, at least seven states introduced legislation to ban or limit using mRNA vaccines. Iowa’s SF 360 sought to prohibit any “gene-based vaccines” (i.e., those developed using mRNA or DNA technology); the bill was based on a widely debunked myth that mRNA vaccines can interact with and alter human DNA (they can’t). New York’s A 4798 would prevent administering COVID-19 mRNA vaccines until the department of health conducts a risk-benefit analysis.
Several states have introduced legislation to prohibit selling — or require labeling foods that contain — vaccine or vaccine material. This bill is based on another common internet rumor that mRNA vaccines are being introduced into the food supply via livestock and produce (they aren’t). Nonetheless, Utah enacted a bill (HB 84) requiring that food intended for human consumption that contains a vaccine or vaccine material be designated as a drug. Similar bills were introduced in Florida (HB 525), Alabama (HB 316), and Tennessee (SB 616, HB 1100).
Vaccine Authority’s Shifting Landscape
While the federal government plays an important role in putting forth policy recommendations, the ultimate power to impose or revoke vaccine requirements and determine exemptions outside of health emergencies rests with states. In many jurisdictions, state health agency expertise determines the vaccines required for school enrollment. These decisions, while ultimately at the feet of state health officials, rely heavily on input from experienced, knowledgeable, and skilled agency staff. Recent legislative actions in several states seek to shift authority for determining school-based immunization requirements solely to the legislature.
Idaho’s new law (H 290) removes the state board of health’s authority to determine which immunizations are required for daycare and school enrollment, as well as the manner and frequency of their administration. The bill also repeals a former law establishing the Idaho Childhood Immunization Policy Commission, created in 2010 to issue recommendations to the legislature and board of health. A similar effort in Maine (LD 727) would remove health department authority to determine school vaccine requirements as part of a larger repeal effort responding to the 2019 law disallowing vaccine exemptions based on religious or philosophical grounds.
In New Hampshire, existing statutes define required immunizations for school attendance and allow the state health official to add to this list via the rulemaking process. Recently, lawmakers introduced a bill (HB 357) that would remove this add-on ability. If passed, existing commissioner-led requirements for vaccines such as varicella, hepatitis B, and Hib would expire in June 2026 and no future amendments could occur under this authority. Several other bills introduced in Texas (HB 468, HB 3304, SB 94, SB 117, HB 3852), West Virginia (SB 108, HB 2203), and North Carolina (HB 89) target shifting authority and/or modifying vaccine requirements for certain school types.
Evidence-Based Policy as the Path Forward
State and territorial health agencies are foundational to preventing the spread of infectious diseases through vaccine education and administration. ASTHO has identified public health expertise in developing vaccination policy as one of three recommended strategies that prioritize evidence-based public health authority and support agencies to protect and improve health.
As this landscape further evolves, ASTHO will continue tracking legislative and executive action on this important public health issue.