PolicyBrief
S. 3323
119th CongressDec 3rd 2025
Family Vaccine Protection Act
IN COMMITTEE

This bill formally establishes the Advisory Committee on Immunization Practices (ACIP) based on scientific evidence and sets new evidence standards for modifying the National Vaccine Injury Compensation Program.

John Hickenlooper
D

John Hickenlooper

Senator

CO

LEGISLATION

Proposed Law Formalizes Vaccine Policy, Sets High Scientific Bar for Injury Compensation

If you’ve ever wondered who decides which vaccines your insurance has to cover and which ones your kids need for school, this bill is about the people behind those decisions. The Family Vaccine Protection Act is essentially a rulebook for the Advisory Committee on Immunization Practices (ACIP), the group of experts who give the CDC advice on vaccine use.

This bill (Sec. 2) formally writes ACIP into federal law, defining exactly how they operate, who’s on the committee, and how they make recommendations. Why does this matter to you? Because when ACIP makes a recommendation and the CDC Director adopts it, that recommendation is what triggers the requirement for most health plans to cover the vaccine at no cost to you. It’s the mechanism that turns expert advice into mandated, free coverage.

The New Rulebook for Vaccine Guidance

The core change here is transparency and a heavy focus on evidence. ACIP’s recommendations must now be based on a “preponderance of the best available, peer-reviewed scientific evidence.” That’s a high bar, and it’s meant to ensure that public health guidance is locked down by solid science. The bill also requires ACIP to meet within 90 days of any new vaccine being licensed, ensuring timely guidance for the public.

But here’s the crucial detail: The CDC Director gets the final say. The Director must adopt the ACIP recommendation unless they determine it is not supported by the scientific evidence. If the Director decides to reject the expert advice, they have to publish the scientific basis for that decision and notify Congress within 48 hours. This is a double-edged sword. On one hand, it forces the CDC to show its work if it goes against the experts. On the other hand, it gives the Director significant power to override the consensus of the scientific committee, potentially opening the door to policy decisions that aren't fully aligned with the expert panel’s view. For the average person, this could lead to confusion if the official guidance appears to contradict what the top experts recommended.

Raising the Bar for Vaccine Injury Claims

Section 3 tackles the National Vaccine Injury Compensation Program (VICP). This is the federal system designed to compensate people who are injured by vaccines. Currently, the Secretary of Health and Human Services can modify the list of covered injuries (the Vaccine Injury Table). This bill adds a significant hurdle: Any removal of an injury from the table must now also be supported by the “preponderance of the best available scientific evidence.”

While this sounds like a win for scientific rigor, it could make it much harder to update the table if new scientific findings suggest an injury should no longer be covered, or conversely, if a new injury needs to be added. For those who suffer adverse reactions, the high evidentiary standard could slow down the process of recognizing and compensating newly identified conditions. Imagine a scenario where a new, rare adverse event is suspected; gathering a “preponderance” of peer-reviewed evidence takes time, and the victims seeking compensation would be waiting until that high bar is met. It’s a move that prioritizes scientific certainty, which is good, but it might come at the cost of timely updates for people needing help now.