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Bill

HB 371

Ban mRNA vaccinations in Montana for humans

2025 Regular Session Introduced by Greg Kmetz

Montana bill would ban mRNA vaccines for humans; failed to pass the legislature in 2025 despite committee approval.

(H) Died in Process
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Bill Summary · HB 371

Legislative bill overview

HB 371 would prohibit the administration of mRNA-based vaccines to humans in Montana. The bill passed a House Judiciary Committee with amendments but failed to advance through subsequent legislative readings, ultimately dying in process during the 2025 legislative session.

Why is this important

This bill represents a significant challenge to vaccine availability and public health decision-making in Montana. If passed, it would restrict access to mRNA vaccines—including those for COVID-19 and other diseases—regardless of individual medical choice or federal approval status, potentially affecting disease prevention and emergency response capabilities.

Potential points of contention

  • Medical autonomy vs. public health authority: Conflict between individual vaccine choice and state regulatory power over medical treatments, including whether bans should exist for vaccines with established safety monitoring
  • Federal vs. state jurisdiction: Tension between state legislative authority and federal FDA approval processes; potential conflicts with interstate commerce and federal vaccine distribution programs
  • Scientific consensus: The bill contradicts established medical evidence from the CDC, WHO, and major health organizations regarding mRNA vaccine safety and efficacy profiles accumulated over billions of doses
  • Emergency preparedness: Restrictions could complicate pandemic response or emerging disease management if mRNA vaccines prove effective for new health threats

Compiled from official sources — confirm details with the bill’s official record.

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