Vaccine Setup (Montana)

Last Modified on 06/30/2025 9:12 am CDT

Tool Search: Vaccine Setup

See the Immunizations (Montana) and Immunization Batch Report (Montana) for more information about Montana-specific immunization records.

Health vaccines and their associated compliance listings are based on state guidelines. The following information describes vaccine compliance rules as defined by the Montana Department of Health.

For more information on the creation, modification or deletion of vaccine compliances, see the Vaccine Setup page.

General Compliance

  • Half-doses or reduced doses of a vaccine are not considered valid.
  • 4 day tolerance periods should be given for all spacing requirements.

DTaP

Note: DTaP rules track the initial series of the vaccine, while Tdap tracks the booster doses. Students must be compliant for both DTaP and Tdap.

Rule

Requirements
4 doses
Compliant		 Students are considered compliant when:
  • The student receives four doses of the DT or DTaP/DTP vaccine.
  • The difference between the last dose and the student's birthdate is greater than or equal to 48 months with a 4-day tolerance. 
4 doses PK
Compliant		 Students are considered compliant when:
  • The student is in state grade PK: Prekindergarten.
  • The student receives four doses of the DT or DTaP/DTP vaccine.
Age 7 and older: 3 doses
Compliant

Students are considered compliant when:

  • The student is at least 84 months old.
  • The student receives three doses of the DT, DTaP/DTP, Td, or Tdap vaccine.
    • The difference between the first dose and the student's birthdate is greater than or equal to 12 months with a 4-day tolerance.
  • The student receives one dose of the Td or Tdap vaccine.
    • The difference between the first dose and the student's birthdate is greater than or equal to 84 months with a 4-day tolerance. 
Age 7 and older: 4 doses
Compliant

Students are considered compliant when:

  • The student receives four doses of the DT, DTaP/DTP, Td, or Tdap vaccine.
  • The student receives one dose of the Td or Tdap vaccine.
    • The difference between the first dose and the student's birthdate is greater than or equal to 84 months with a 4-day tolerance. 

Polio

Rule Requirements
3 doses PK
Compliant		 Students are considered compliant when:
  • The student is in state grade PK: Prekindergarten.
  • The student receives three doses of the IPV, OPV, or IPV/OPV vaccine.
3 doses
Compliant		 Students are considered compliant when:
  • The student receives three doses of the IPV, OPV, or IPV/OPV vaccine.
  • The difference between the last dose and the student's birthdate is greater than or equal to 48 months with a 4-day tolerance.
  • The difference between the third and previous dose is greater than or equal to 28 days with a 4-day tolerance.
  • The difference between the second and previous dose is greater than or equal to 28 days with a 4-day tolerance.
Default
Non-compliant		 N/A

MMR

Rule Requirements
1 dose MMR PK
Compliant		 Students are considered compliant when:
  • The student is in state grade PK: Prekindergarten.
  • The student receives one dose of the MMR or MMRV vaccine.
  • The difference between the first dose and the student's birthdates is greater than or equal to 12 months with a 4-day tolerance. 
1M, 1M 1R PK
Compliant		 Students are considered compliant when:
  • The student is in state grade PK: Prekindergarten.
  • The student receives one dose of the Measles vaccine.
    • The difference between the first dose and the student's birthdates is greater than or equal to 12 months with a 4-day tolerance. 
  • The student receives one dose of the Mumps vaccine.
    • The difference between the first dose and the student's birthdates is greater than or equal to 12 months with a 4-day tolerance. 
  • The student receives one dose of the Rubella vaccine.
    • The difference between the first dose and the student's birthdates is greater than or equal to 12 months with a 4-day tolerance. 
1MMR, 1M, 1M 1R
Compliant		 Students are considered compliant when:
  • The student receives one dose of the MMR or MMRV vaccine.
    • The difference between the first dose and the student's birthdates is greater than or equal to 12 months with a 4-day tolerance. 
  • The student receives one dose of the Measles vaccine.
    • The difference between the first dose and the student's birthdates is greater than or equal to 12 months with a 4-day tolerance. 
  • The student receives one dose of the Mumps vaccine.
    • The difference between the first dose and the student's birthdates is greater than or equal to 12 months with a 4-day tolerance. 
  • The student receives one dose of the Rubella vaccine.
    • The difference between the first dose and the student's birthdates is greater than or equal to 12 months with a 4-day tolerance. 
2 doses MMR
Compliant		 Students are considered compliant when:
  • The student receives two doses of the MMR or MMRV vaccine.
  • The difference between the second-to-last dose and the student's birthdate is greater than or equal to 12 months with a 4-day tolerance.
2M, 2M, 2R
Compliant		 Students are considered compliant when:
  • The student receives two doses of the Measles vaccine.
    • The difference between the first dose and the student's birthdates is greater than or equal to 12 months with a 4-day tolerance. 
  • The student receives two doses of the Mumps vaccine.
    • The difference between the first dose and the student's birthdates is greater than or equal to 12 months with a 4-day tolerance. 
  • The student receives two doses of the Rubella vaccine.
    • The difference between the first dose and the student's birthdates is greater than or equal to 12 months with a 4-day tolerance.
Default
Non-Compliant		 N/A

Hib

No requirement for students aged 60 months and older.

No requirements for students in grades K-12.

Rule Requirements
1 dose PK
Compliant		 Students are considered compliant when:
  • The student is in state grade PK: Prekindergarten.
  • The student receives one dose of the Hib vaccine. 
  • The difference between the first dose and the student's birthdate is greater than or equal to 12 months with a 4-day tolerance.
Default PK
Non-Compliant		 Student in PK: Prekindergarten who have not met the above requirements are considered non-compliant.

Varicella

RuleRequirement
0 to 11 months
No Requirement		Students 11 months old and younger are not required to receive any Varicella doses.
12 mos PK 1 dose
Compliant		Students are considered compliant when:
  • The student is at least 12 months old.
  • The student is in state grade PK: Prekindergarten.
  • The student receives one dose of the Varicella or MMRV vaccine.
  • The difference between the first dose and the student's birthdate is greater than or equal to 12 months with a 4-day tolerance.
2 dose
Compliant		Students are considered compliant when:
  • The student is at least 12 months old.
  • The student receives two doses of the Varicella or MMRV vaccine.
  • The difference between the first dose and the student's birthdate is greater than or equal to 12 months with a 4-day tolerance.
  • The difference between the second and previous dose is greater than or equal to 28 days with a 4-day tolerance.
Default
Non-compliant		N/A

Tdap

Note: DTaP rules track the initial series of the vaccine, while Tdap tracks the booster doses. Students must be compliant for both DTaP and Tdap.

Rule

Requirements

PK to 6th

No Requirement

Students in state grades 01, 02, 03, 04, 05, 06, KF, KH, KG, P1, PK are not required to receive any doses of the Tdap vaccine.

1 dose grades 7-12
Compliant

Students are considered compliant if the following conditions have been met:

  • The student is in state grades 07, 08, 09, 10, 11, 12.
  • The student receives 1 dose of the Tdap vaccine.
  • The difference between the last dose and the student's birthdate is greater than or equal to 84 months, with a 4-day tolerance.
Default Non-compliant

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