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HB645 • 2026

COVID-19 mRNA vaccinations; prohibit until Health Department conducts study and determines they are safe.

AN ACT TO PROVIDE THAT THE ADMINISTRATION OF COVID-19 MRNA VACCINATIONS IS PROHIBITED IN MISSISSIPPI UNTIL THE STATE DEPARTMENT OF HEALTH ANALYZES ANY EXISTING DATA AND CONCLUDES THAT THE BENEFITS OF SUCH VACCINE OUTWEIGH THE RISK; TO DIRECT THE STATE DEPARTMENT OF HEALTH TO CONDUCT A STUDY AND MAKE RECOMMENDATIONS ON THE BENEFITS AND RISKS OF THE ADMINISTRATION OF COVID-19 MRNA VACCINATIONS; TO PROVIDE THAT ONLY IF THE DEPARTMENT DETERMINES THAT THE ADMINISTRATION OF COVID-19 MRNA VACCINATIONS ARE SAFE MAY THE USE OF SUCH VACCINE CONTINUE; AND FOR RELATED PURPOSES.

Did Not Pass

The latest official action shows that this bill did not move forward in that session.

Sponsor
Boyd (19th)
Last action
2026-02-03
Official status
Dead
Effective date
Passage

Plain English Breakdown

The official source does not specify a timeframe for completing the study beyond it being 'within one (1) year after the effective date of this act.'

Stop COVID-19 mRNA Vaccines Until Study Shows They Are Safe

This bill stops the use of COVID-19 mRNA vaccines in Mississippi until the State Department of Health studies them and decides they are safe.

What This Bill Does

  • Stops giving COVID-19 mRNA vaccines in Mississippi until a study is done.

Who It Names or Affects

  • People who might get vaccinated for COVID-19 in Mississippi
  • The State Department of Health

Terms To Know

mRNA vaccine
A type of vaccine that uses a piece of the virus's genetic material to teach the body how to fight it.

Limits and Unknowns

  • The bill does not specify what happens if the study shows vaccines are risky.
  • It is unclear how long it will take for the department to finish its analysis and make a decision.
  • This bill did not pass in the session where it was introduced.

Bill History

  1. 2026-02-03 Mississippi Legislative Bill Status System

    02/03 (H) Died In Committee

  2. 2026-01-13 Mississippi Legislative Bill Status System

    01/13 (H) Referred To Public Health and Human Services

Official Summary Text

COVID-19 mRNA vaccinations; prohibit until Health Department conducts study and determines they are safe.

Current Bill Text

Read the full stored bill text 
H. B. No. 645 *HR26/R960* ~ OFFICIAL ~ G1/2
26/HR26/R960
PAGE 1 (RF\KW)

To: Public Health and Human
Services
MISSISSIPPI LEGISLATURE REGULAR SESSION 2026

By: Representative Boyd (19th)

HOUSE BILL NO. 645

AN ACT TO PROVIDE THAT THE ADMINISTRATION OF COVID-19 MRNA 1
VACCINATIONS IS PROHIBITED IN MISSISSIPPI UNTIL THE STATE 2
DEPARTMENT OF HEALTH ANALYZES ANY EXISTING DATA AND CONCLUDES THAT 3
THE BENEFITS OF SUCH VACCINE OUTWEIGH THE RISK; TO DIRECT THE 4
STATE DEPARTMENT OF HEALTH TO CONDUCT A STUDY AND MAKE 5
RECOMMENDATIONS ON THE BENEFITS AND RISKS OF THE ADMINISTRATION OF 6
COVID-19 MRNA VACCINATIONS; TO PROVIDE THAT ONLY IF THE DEPARTMENT 7
DETERMINES THAT THE ADMINISTRATION OF COVID-19 MRNA VACCINATIONS 8
ARE SAFE MAY THE USE OF SUCH VACCINE CONTINUE; AND FOR RELATED 9
PURPOSES. 10
BE IT ENACTED BY THE LEGISLATURE OF THE STATE OF MISSISSIPPI: 11
SECTION 1. (1) Notwithstanding any other provision of law 12
to the contrary, the administration of COVID-19 mRNA vaccinations 13
is prohibited in Mississippi until the State Department of Health 14
analyzes any existing data and concludes that the benefits of such 15
vaccine outweigh the risks. 16
(2) The State Department of Health shall conduct a study and 17
make recommendations on the benefits and risks of the 18
administration of COVID-19 mRNA vaccinations. Such analysis shall 19
include, but not be limited to, a self-controlled case series that 20
shall be completed within one (1) year after the effective date of 21
this act. Only if, after the conclusion of such analysis, the 22
H. B. No. 645 *HR26/R960* ~ OFFICIAL ~
26/HR26/R960
PAGE 2 (RF\KW)
ST: COVID-19 mRNA vaccinations; prohibit until
Health Department conducts study and determines
they are safe.
department determines that the administration of COVID-19 mRNA 23
vaccinations are safe may the use of such vaccine continue. 24
SECTION 2. This act shall take effect and be in force from 25
and after its passage. 26