Colorado Immunization Rules

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Health vaccines and their associated compliance listings are based on state guidelines. Vaccine requirements for Colorado are hard-coded. The following information describes vaccine compliance rules as defined by the Colorado Department of Health.

Colorado follows the CDC ACIP recommendations for vaccinations.

A State Exemption code allows mapping of vaccines to an appropriate exemption code, as follows. These mappings are entered on the Vaccine Exemptions tool.

  • M: Medical
  • N: Non-Medical
  • L: Lab Verified

All immunizations follow the spacing rules as follows:

  • A student who did not have the fourth dose on or after four years should be able to get a fifth dose on or after four years and be compliant if the spacing is correct, but they do not become compliant with a fifth dose on or after four years of age.

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

General Compliance

  • Vaccine doses administered less than or equal to four days before the minimum interval of age are valid and are considered compliant.
  • Vaccine doses administered less than or equal to five days before the minimum interval of age are NOT valid and are considered NOT compliant.
  • Doses of Varicella and MMR must be given on the same day, or at least 28 days apart.
  • For calculation purposes, 4 weeks = 28 days. Intervals of four months or greater are determined by calendar months.

Immunizations

Hepatitis B

Students enrolled in Grades K-12:

Rule

Requirements

1 dose 0-1 months

Compliant

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

  • the student is at least 1 month old, and
  • the student receives one dose of the Hepatitis B (Hep B) vaccine.

2 doses 2-3 months

Compliant

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

  • the student is at least 2 months, but no older than 3 months old,
  • the student receives two doses of the Hepatitis B (Hep B) vaccine, and
  • the difference between the second dose and the previous is greater than 28 days with a 4 day tolerance.

3 doses

Compliant

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

  • the student receives three doses of the Hepatitis B (Hep B) vaccine,
  • the difference between the second dose and the previous is greater than 28 days with a 4 day tolerance,
  • the difference between the last dose and the second valid dose is greater than 56 days with a 4 day tolerance,
  • the difference between the last dose and the first valid dose is greater than 112 days with a 4 day tolerance, and
  • the difference between the last dose and the student's birthdate is greater than 168 days with a 4 day tolerance.

2 doses Hep B-2 Over 11 yrs

In Progress

Students are considered in progress if the following conditions have been met:

  • the student is at least 132 months old,
  • the student receives two doses of the Hepatitis B - 2 dose (Hep B - 2 Dose) vaccine, and
  • the difference between the second dose and the previous is greater than 4 months with a 4 day tolerance.

1 dose Hep B-2 Over 11 yrs

In Progress

Students are considered in progress if the following conditions have been met:

  • the student is at least 132 months old,
  • the student receives one dose of the Hepatitis B - 2 dose (Hep B - 2 Dose) vaccine, and
  • the difference between the last dose and the effective date is less than 3 months with a 1 day tolerance.

2 doses

In Progress

Students are considered in progress if the following conditions have been met:

  • the student receives two doses of the Hepatitis B (Hep B) vaccine, and
  • the difference between the last dose and the effective date is less than 56 days with a 0 (zero) day tolerance.

1 dose

In Progress

Students are considered in progress if the following conditions have been met:

  • the student receives one dose of the Hepatitis B (Hep B) vaccine, and
  • the difference between the last dose and the effective date is less than 28 days with a 0 (zero) day tolerance.

DTaP

Rule

Requirements

Age 0-1

No Requirement 

Students age 0-1 months old are not required to receive any doses of the DT, Td, Tdap, or DTaP-DTP vaccine.

1 dose Age 2-3 months

Compliant

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

  • the student is at least 2 months, but no older than 3 months old,
  • the student receives one dose of the DT, Td, Tdap, or DTaP-DTP vaccine, and
  • the difference between the dose and the student's birthdate is greater than 42 days with a 4 day tolerance.

2 doses Age 4-5 months

Compliant

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

  • the student is at least 4 months, but no older than 5 months old,
  • the student receives two doses of the DT, Td, Tdap, or DTaP-DTP vaccine,
  • the difference between the first dose and the student's birthdate is greater than 42 days with a 4 day tolerance, and
  • the difference between the second dose and the previous is greater than 28 days with a 4 day tolerance.

3 doses Age 6-14 months

Compliant

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

  • the student is at least 6 month, but no older than 14 months old,
  • the student receives three doses of the DT, Td, Tdap, or DTaP-DTP vaccine,
  • the difference between the first dose and the student's birthdate is greater than 42 days with a 4 day tolerance,
  • the difference between the second dose and the previous is greater than 28 days with a 4 day tolerance, and
  • the difference between the third dose and the previous is greater than 28 days with a 4 day tolerance.

4 doses under 4

Compliant

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

  • the student is no older than 47 months old,
  • the student receives four doses of the DT, Td, Tdap, or DTaP-DTP vaccine,
  • the difference between the first dose and the student's birthdate is greater than 42 days with a 4 day tolerance,
  • the difference between the second dose and the previous is greater than 28 days with a 4 day tolerance,
  • the difference between the third dose and the previous is greater than 28 days with a 4 day tolerance,
  • the difference between the fourth dose and the previous is greater than 4 months with a 4 day tolerance, and
  • the difference between the fourth dose and the student's birthdate is greater than 12 months with a 4 day tolerance.

4 doses PK

Compliant

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

  • the student is in state grade: 004: Pre-kindergarten (Preschool),
  • the student receives four doses of the DT, Td, Tdap, or DTaP-DTP vaccine,
  • the difference between the first dose and the student's birthdate is greater than 42 days with a 4 day tolerance,
  • the difference between the second dose and the previous is greater than 28 days with a 4 day tolerance,
  • the difference between the third dose and the previous is greater than 28 days with a 4 day tolerance,
  • the difference between the fourth dose and the previous is greater than 4 months with a 4 day tolerance, and
  • the difference between the fourth dose and the student's birthdate is greater than 12 months with a 4 day tolerance.

4 doses

Compliant

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

  • the student receives four doses of the DT, Td, Tdap, or DTaP-DTP vaccine,
  • the difference between the first dose and the student's birthdate is greater than 42 days with a 4 day tolerance,
  • the difference between the second dose and the previous is greater than 28 days with a 4 day tolerance,
  • the difference between the third dose and the previous is greater than 28 days with a 4 day tolerance,
  • the difference between the fourth dose and the previous is greater than 4 months with a 4 day tolerance, and
  • the difference between the fourth dose and the student's birthdate is greater than 48 months with a 4 day tolerance.

6 doses

Compliant

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

  • the student receives six doses of the DT, Td, Tdap, or DTaP-DTP vaccine.

3 doses 7+

Compliant

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

  • the student is at least 84 months old,
  • the student receives three doses of the DT, Td, Tdap, or DTaP-DTP vaccine,
  • the difference between the first dose and the student's birthdate is greater than 12 months with a 4 day tolerance,
  • the difference between the second dose and the previous is greater than 28 days with a 4 day tolerance,
  • the difference between the third dose and the previous is greater than 6 months with a 4 day tolerance, and
  • the difference between the last dose and the student's birthdate is greater than 84 months with a 4 day tolerance.

4 doses 7+

Compliant

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

  • the student is at least 84 months old,
  • the student receives four doses of the DT, Td, Tdap, or DTaP-DTP vaccine,
  • the difference between the first dose and the student's birthdate is less than 11 months with a 4 day tolerance,
  • the difference between the second dose and the previous is greater than 28 days with a 4 day tolerance,
  • the difference between the third dose and the previous is greater than 28 days with a 4 day tolerance,
  • the difference between the fourth dose and the previous is greater than 6 months with a 4 day tolerance,
  • the difference between the last dose and the student's birthdate is greater than 84 months with a 4 day tolerance.

3 doses

In Progress

Students are considered in progress if the following conditions have been met:

  • the student is at least 84 months old,
  • the student receives three doses of the DT, Td, Tdap, or DTaP-DTP vaccine, and
  • the difference between the last dose and the effective date is less than 5 months with a 1 day tolerance.

2 doses 7+

In Progress

Students are considered in progress if the following conditions have been met:

  • the student is at least 84 months old,
  • the student receives two doses of the DT, Td, Tdap, or DTaP-DTP vaccine, and
  • the difference between the last dose and the effective date is less than 5 months with a 1 day tolerance.

1 dose 

In Progress

Students are considered in progress if the following conditions have been met:

  • the student receives one dose of the DT, Td, Tdap, or DTaP-DTP vaccine, and
  • the difference between the dose and the effective date is less than 28 days with a 0 (zero) day tolerance.

Tdap

Rule

Requirements

1 dose

Compliant

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

  • the student is in state grade: 060, 070, 080, 090, 100, 110, 120, 
  • the student receives one dose of the Tdap or DTaP-DTP vaccine, and
  • the difference between the dose and the student's birthdate is greater than 120 months with a 4 day tolerance.

No doses

Non-compliant

Students in state grade: 060, 070, 080, 090, 100, 110, 120 who have not received any doses of the Tdap or DTaP-DTP vaccine are considered non-compliant.

Hib

Rule

Requirements

Age 0-1 months

No requirement

Students 1 month old or younger are not required to receive any doses of the Haemophilus influenza, type B (Hib) vaccine. 

Age 5 yrs and older

No requirement

Students 60 months (5 years) old and older are not require to receive any doses of the Haemophilus influenza, type B (Hib) vaccine.

1 dose Age 2-3 months

Compliant

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

  • the student is at least 2 months, but no older than 3 months old,
  • the student receives one dose of the Haemophilus influenza, type B (Hib) vaccine, and
  • the difference between the dose and the student's birthdate is greater than 42 days with a 4 day tolerance.

2 doses Age 4-5 months

Compliant

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

  • the student is at least 2 months, but no older than 3 months old,
  • the student receives two doses of the Haemophilus influenza, type B (Hib) vaccine,
  • the difference between the first dose and the student's birthdate is greater than 42 days with a 4 day tolerance, and
  • the difference between the second dose and the previous is greater than 28 days with a 4 day tolerance.

3 doses <7 months 1st shot 

Compliant

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

  • the student is no older than 11 months old,
  • the student receives three doses of the Haemophilus influenza, type B (Hib) vaccine,
  • the difference between the first dose and the student's birthdate is greater than 42 days with a 4 day tolerance,
  • the difference between the first dose and the student's birthdate is less than 6 months with a 4 day tolerance,
  • the difference between the second dose and the previous is greater than 28 days with a 4 day tolerance, and
  • the difference between the third dose and the previous is greater than 28 days with a 4 day tolerance.

3 doses 7-11 months 1st shot

Compliant

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

  • the student is no older than 11 months old,
  • the student receives three doses of the Haemophilus influenza, type B (Hib) vaccine,
  • the difference between the first dose and the student's birthdate is greater than 7 months with a 4 day tolerance,
  • the difference between the first dose and the student's birthdate is less than 11 months with a 4 day tolerance,
  • the difference between the second dose and the previous is greater than 28 days with a 4 day tolerance, and
  • the difference between the third dose and the previous is greater than 56 days with a 4 day tolerance.

 3 doses 12-59 months

Compliant

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

  • the student is at least 12 months, but no older than 59 months old,
  • the student receives three doses of the Haemophilus influenza, type B (Hib) vaccine,
  • the difference between the first dose and the student's birthdate is greater than 42 days with a 4 day tolerance,
  • the difference between the first dose and the student's birthdate is less than 11 months with a 4 day tolerance,
  • the difference between the second dose and the previous is greater than 28 days with a 4 day tolerance,
  • the difference between the third dose and the previous is greater than 56 days with a 4 day tolerance, and
  • the difference between the third dose and the student's birthdate is greater than 12 months.

4 doses

Compliant

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

  • the student is at least 12 months old,
  • the student receives four doses of the Haemophilus influenza, type B (Hib) vaccine,
  • the difference between the first dose and the student's birthdate is greater than 42 days with a 4 day tolerance,
  • the difference between the first dose and the student's birthdate is less than 11 months with a 4 day tolerance,
  • the difference between the second dose and the previous is greater than 28 days with a 4 day tolerance,
  • the difference between the second dose and the student's birthdate is less than 11 months with a 4 day tolerance,
  • the difference between the third dose and the previous is greater than 28 days with a 4 day tolerance,
  • the difference between the third dose and the student's birthdate is greater than 11 months, and
  • the difference between the fourth dose and the previous is greater than 56 days with a 4 day tolerance.

2 doses 12-14 months 1st shot

Compliant

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

  • the student receives two doses of the Haemophilus influenza, type B (Hib) vaccine,
  • the difference between the second dose and the previous is greater than 56 days with a 4 day tolerance,
  • the difference between the first dose and the student's birthdate is greater than 12 months with a 4 day tolerance, and
  • the difference between the first dose and the student's birthdate is less than 14 months with a 4 day tolerance

1 dose 15 months 1st shot

Compliant

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

  • the student receives one dose of the Haemophilus influenza, type B (Hib) vaccine, and
  • the difference between the first dose and the student's birthdate is greater than 15 months with a 4 day tolerance.

1 dose In Progress before 1yr

In Progress

Students are considered in progress if the following conditions have been met:

  • the student receives one dose of the Haemophilus influenza, type B (Hib) vaccine,
  • the difference between the last dose and the effective date is less than 28 days with a 0 (zero) day tolerance, and
  • the difference between the last dose and the student's birthdate is less than 11 months with a 0 (zero) day tolerance.

1 dose In Progress after 1yr

In Progress

Students are considered in progress if the following conditions have been met:

  • the student receives one dose of the Haemophilus influenza, type B (Hib) vaccine,
  • the difference between the last dose and the effective date is less than 56 days with a 0 (zero) day tolerance, and
  • the difference between the last dose and the student's birthdate is greater than 12 months with a 0 (zero) day tolerance.

2 doses

In Progress

Students are considered in progress if the following conditions have been met:

  • the student receives two doses of the Haemophilus influenza, type B (Hib) vaccine,
  • the difference between the last dose and the effective date is less than 56 days with a 0 (zero) day tolerance.

Pneumococcal

Rule

Requirements

Age 0-1 months

No Requirement

Students age 0-1 month old are not required to receive any doses of the Pneumococcal PCV or PPV vaccine.

Age 5 and older

No Requirement

Students age 60 months (5 years) old or older are not required to receive any doses of the Pneumococcal PCV or PPV vaccine.

1 dose required ages 2-3 months

Compliant

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

  • the student is at least 2 months, but no older than 3 months old,
  • the student receives one dose of the Pneumococcal PCV or PPV vaccine, and
  • the difference between the first dose and the student's birthdate is greater than or equal to 42 days with a 4 day tolerance.

2 doses required age 4-5 months

Compliant

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

  • the student is at least 4 months, but no older than 5 months old,
  • the student receives two doses of the Pneumococcal PCV or PPV vaccine,
  • the difference between the first dose and the student's birthdate is greater than or equal to 42 days with a 4 day tolerance, and
  • the difference between the second dose and previous is greater than or equal to 28 days with a 4 day tolerance.

3 doses 6-11 months

Compliant

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

  • the student is at least 6 months, but no older than 11 months old,
  • the student receives three doses of the Pneumococcal PCV or PPV vaccine,
  • the difference between the first dose and the student's birthdate is greater than or equal to 42 days with a 4 day tolerance,
  • the difference between the second dose and previous is greater than or equal to 28 days with a 4 day tolerance,
  • the difference between the third dose and previous is greater than or equal to 28 days with a 4 day tolerance, and
  • the difference between the second dose and the student's birthdate is greater than or equal to 42 days with a 4 day tolerance.

4 doses 12 months

Compliant

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

  • the student is at least 12 months old,
  • the student receives two doses of the Pneumococcal PCV or PPV vaccine,
  • the difference between the first dose and the student's birthdate is greater than or equal to 42 days with a 4 day tolerance,
  • the difference between the second dose and previous is greater than or equal to 28 days with a 4 day tolerance,
  • the difference between the third dose and previous is greater than or equal to 28 days with a 4 day tolerance, 
  • the difference between the fourth dose and the previous is greater than or equal to 56 days with a 4 day tolerance, and
  • the difference between the first dose and the student's birthdate is less than or equal to 6 months with a 4 day tolerance.

3 doses 12 months 7-11 shot

Compliant

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

  • the student is at least 12 months old,
  • the student receives three doses of the Pneumococcal PCV or PPV vaccine,
  • the difference between the first dose and the student's birthdate is greater than or equal to 42 days with a 4 day tolerance,
  • the difference between the second dose and previous is greater than or equal to 28 days with a 4 day tolerance,
  • the difference between the third dose and previous is greater than or equal to 56 days with a 4 day tolerance,
  • the difference between the second dose and the student's birthdate is greater than or equal to 7 months with a 4 day tolerance,
  • the difference between the second dose and the student's birthdate is less than or equal to 11 months with a 4 day tolerance, and
  • the difference between the third dose and the student's birthdate is greater than or equal to 12 months with a 4 day tolerance.

3 doses 12 months

Compliant

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

  • the student is at least 12 months old,
  • the student receives three doses of the Pneumococcal PCV or PPV vaccine,
  • the difference between the first dose and the student's birthdate is greater than or equal to 42 days with a 4 day tolerance,
  • the difference between the first dose and the student's birthdate is less than or equal to 11 months with a 4 day tolerance,
  • the difference between the second dose and previous is greater than or equal to 28 days with a 4 day tolerance, 
  • the difference between the third dose and previous is greater than or equal to 56 days with a 4 day tolerance, and
  • the difference between the last dose and the student's birthdate is greater than or equal to 12 months with a 4 day tolerance.

2 doses 12 months

Compliant

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

  • the student is at least 12 months old,
  • the student receives two doses of the Pneumococcal PCV or PPV vaccine,
  • the difference between the first dose and the student's birthdate is greater than 12 months with a 4 day tolerance, and
  • the difference between the second dose and previous is greater than 56 days with a 4 day tolerance.

1 dose over 24 months

Compliant

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

  • the student receives one doses of the Pneumococcal PCV or PPV vaccine, and
  • the difference between the first dose and the student's birthdate is greater than 24 months with a 4 day tolerance
In Progress

Students are considered in progress if the following conditions have been met:

  • the student receives one doses of the Pneumococcal PCV or PPV vaccine, and
  • the difference between the dose and the effective date is less than 28 days with a 0 (zero) day tolerance.

Polio

Rule

Requirements

Over 18

No Requirement

Students age 216 months (18 years) old or older are not required to receive any doses of the Polio vaccine.

Age 0-1 months

No Requirement

Students age 0-1 months old are not required to receive any doses of the Polio vaccine.

1 dose Age 2-3 months

Compliant

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

  • the student is at least 2 months, but no older than 3 months old,
  • the student receives one dose of the IPV or IPV/OPV Polio vaccine, and
  • the difference between the first dose and the student's birthdate is greater than 42 days with a 4 day tolerance.

 3 doses before 08/07/09

Compliant

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

  • the student receives three doses of the IPV, OPV, or IPV/OPV Polio vaccine,
  • the last dose is received before 08/07/09, 
  • the difference between the first dose and the student's birthdate is greater than 42 days with a 4 day tolerance, 
  • the difference between the second dose and the previous is greater than 28 days with a 4 day tolerance, and
  • the difference between the third dose and the student's birthdate is greater than 48 months with a 4 day tolerance.

2 doses Age 4-5 months

Compliant

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

  • the student is at least 4 months, but no older than 5 months old,
  • the student receives two doses of the IPV, or IPV/OPV Polio vaccine,
  • the difference between the first dose and the student's birthdate is greater than 42 days with a 4 day tolerance, and
  • the difference between the second dose and the previous is greater than 28 days with a 4 day tolerance.

4 doses before 8/7/09

Compliant

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

  • the student receives four doses of the IPV, or IPV/OPV Polio vaccine,
  • the last dose is received before 08/07/09, 
  • the difference between the first dose and the student's birthdate is greater than 42 days with a 4 day tolerance, 
  • the difference between the second dose and the previous is greater than 28 days with a 4 day tolerance, 
  • the difference between the third dose and the previous is greater than 28 days with a 4 day tolerance, and
  • the difference between the fourth dose and the previous is greater than 28 days with a 4 day tolerance.

3 doses PK

Compliant

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

  • the student is in state grade: 004: Pre-kindergarten (Preschool),
  • the student receives three doses of the IPV, OPV, or IPV/OPV Polio vaccine,
  • the difference between the first dose and the student's birthdate is greater than 42 days with a 4 day tolerance, 
  • the difference between the second dose and the previous is greater than 28 days with a 4 day tolerance, and
  • the difference between the third dose and the previous is greater than 28 days with a 4 day tolerance.

 4 doses

Compliant

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

  • the student receives four doses of the IPV, or IPV/OPV Polio vaccine,
  • the difference between the first dose and the student's birthdate is greater than 42 days with a 4 day tolerance, 
  • the difference between the second dose and the previous is greater than 28 days with a 4 day tolerance, 
  • the difference between the third dose and the previous is greater than 28 days with a 4 day tolerance,
  • the difference between the fourth dose and the previous is greater than 6 months with a 4 day tolerance, and
  • the difference between the fourth dose and the student's birthdate is greater than 48 months with a 4 day tolerance.

3 doses

Compliant

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

  • the student receives three doses of the IPV, or IPV/OPV Polio vaccine,
  • the difference between the first dose and the student's birthdate is greater than 42 days with a 4 day tolerance, 
  • the difference between the second dose and the previous is greater than 28 days with a 4 day tolerance, and
  • the difference between the third dose and the previous is greater than 28 days with a 4 day tolerance.

3 doses 4yrs

Compliant

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

  • the student is at least 48 months old,
  • the student receives three doses of the IPV, or IPV/OPV Polio vaccine,
  • the difference between the first dose and the student's birthdate is greater than 42 days with a 4 day tolerance, 
  • the difference between the second dose and the previous is greater than 28 days with a 4 day tolerance,
  • the difference between the third dose and the previous is greater than 6 months with a 4 day tolerance, and
  • the difference between the third dose and the student's birthdate is greater than 48 months with a 4 day tolerance.

1 dose

In Progress

Students are considered in progress if the following conditions have been met:

  • the student receives one dose of the IPV or IPV/OPV Polio vaccine, and
  • the difference between the dose and the effective date is less than 28 days with a 0 (zero) day tolerance.

2 doses

In Progress

Students are considered in progress if the following conditions have been met:

  • the student is at least 48 months old,
  • the student receives two doses of the IPV or IPV/OPV Polio vaccine, and
  • the difference between the last dose and the effective date is less than 5 months with a 1 day tolerance.

MMR

RuleRequirements

Age 0-11 months

No requirement

Students age 0-11 months old are not required to receive any doses of the Measles-Mumps Rubella (MMR) vaccine.

1 dose PK

Compliant

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

  • the student is in state grade: 004: Pre-kindergarten (Preschool),
  • the student receives one dose of the Measles-Mumps Rubella (MMR) or Measles-Mumps-Rubella-Varicella (MMRV) vaccine, and
  • the difference between the dose and the student's birthdate is greater than 12 months with a 4 day tolerance.

1 dose M, M, R PK

Compliant

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

  • the student is in state grade: 004: Pre-kindergarten (Preschool),
  • the student receives one dose of the Measles, Measles-Mumps Rubella (MMR) or Measles-Mumps-Rubella-Varicella (MMRV) vaccine, and
    • the difference between the dose and the student's birthdate is greater than 12 months with a 4 day tolerance, OR
  • the student receives one dose of the Mumps, Measles-Mumps Rubella (MMR) or Measles-Mumps-Rubella-Varicella (MMRV) vaccine, and
    • the difference between the dose and the student's birthdate is greater than 12 months with a 4 day tolerance, OR
  • the student receives one dose of the Rubella, Measles-Mumps Rubella (MMR) or Measles-Mumps-Rubella-Varicella (MMRV) vaccine, and
    • the difference between the dose and the student's birthdate is greater than 12 months with a 4 day tolerance.

1 dose 12-47 months

Compliant

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

  • the student is at least 12 months, but no older than 47 months old,
  • the student receives one dose of the Measles-Mumps Rubella (MMR) or Measles-Mumps-Rubella-Varicella (MMRV) vaccine, and
  • the difference between the dose and the student's birthdate is greater than 12 months with a 4 day tolerance.

1 dose 12-47 months M, M, R PK

Compliant

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

  • the student is at least 12 months, but no older than 47 months old,
  • the student receives one dose of the Measles, Measles-Mumps Rubella (MMR) or Measles-Mumps-Rubella-Varicella (MMRV) vaccine, and
    • the difference between the dose and the student's birthdate is greater than 12 months with a 4 day tolerance, OR
  • the student receives one dose of the Mumps, Measles-Mumps Rubella (MMR) or Measles-Mumps-Rubella-Varicella (MMRV) vaccine, and
    • the difference between the dose and the student's birthdate is greater than 12 months with a 4 day tolerance, OR
  • the student receives one dose of the Rubella, Measles-Mumps Rubella (MMR) or Measles-Mumps-Rubella-Varicella (MMRV) vaccine, and
    • the difference between the dose and the student's birthdate is greater than 12 months with a 4 day tolerance.

2 doses

Compliant

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

  • the student receives two doses of the Measles-Mumps Rubella (MMR) or Measles-Mumps-Rubella-Varicella (MMRV) vaccine,
  • the difference between the first dose and the student's birthdate is greater than 12 months with a 4 day tolerance, and
  • the difference between the second dose and the previous is greater than 28 days with a 4 day tolerance.

2 doses M, M, R

Compliant

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

  • the student receives two doses of the Measles, Measles-Mumps Rubella (MMR) or Measles-Mumps-Rubella-Varicella (MMRV) vaccine,
    • the difference between the first dose and the student's birthdate is greater than 12 months with a 4 day tolerance, and
    • the difference between the second dose and the previous is greater than 28 days with a 4 day tolerance, OR
  • the student receives two doses of the Mumps, Measles-Mumps Rubella (MMR) or Measles-Mumps-Rubella-Varicella (MMRV) vaccine,

    • the difference between the first dose and the student's birthdate is greater than 12 months with a 4 day tolerance, and
    • the difference between the second dose and the previous is greater than 28 days with a 4 day tolerance, OR
  • the student receives two doses of the Rubella, Measles-Mumps Rubella (MMR) or Measles-Mumps-Rubella-Varicella (MMRV) vaccine,
    • the difference between the first dose and the student's birthdate is greater than 12 months with a 4 day tolerance, and
    • the difference between the second dose and the previous is greater than 28 days with a 4 day tolerance.

1 dose

In Progress

Students are considered in progress if the following conditions have been met:

  • the student receives one dose of the Measles, Mumps, Rubella, Measles-Mumps Rubella (MMR) or Measles-Mumps-Rubella-Varicella (MMRV) vaccine, and
  • the difference between the dose and the effective date is less than 28 days with a 0 (zero) day tolerance.

Varicella

RuleRequirements

Age 0-11 months

No requirement

Students age 0-11 months old are not required to receive any doses of the Varicella or Measles-Mumps-Rubella-Varicella (MMRV) vaccine.
1 dose 12-47 months
Compliant
Students are considered compliant if the following conditions have been met:
  • the student is at least 12 months, but no older than 47 months old,
  • the student receives one dose of the Varicella or Measles-Mumps-Rubella-Varicella (MMRV) vaccine, and
  • the difference between the dose and the student's birthdate is greater than 12 months with a 4 day tolerance.

1 dose PK

Compliant

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

  • the student is in state grade: 004: Pre-kindergarten (Preschool),
  • the student receives one dose of the Varicella or Measles-Mumps-Rubella-Varicella (MMRV) vaccine, and
  • the difference between the dose and the student's birthdate is greater than 12 months with a 4 day tolerance.

2 doses

Compliant

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

  • the student receives two doses of the Varicella or Measles-Mumps-Rubella-Varicella (MMRV) vaccine,
  • the difference between the first dose and the student's birthdate is greater than 12 months with a 4 day tolerance, and
  • the difference between the second dose and the previous is greater than 28 days with a 4 day tolerance.

1 dose

In Progress

Students are considered in progress if the following conditions have been met:

  • the student receives one dose of the Varicella or Measles-Mumps-Rubella-Varicella (MMRV) vaccine, and
  • the difference between the dose and the effective date is less than 28 days with a 0 (zero) day tolerance.

1 dose 13yr

In Progress

Students are considered in progress if the following conditions have been met:

  • the student is no older than 155 months old,
  • the student receives one dose of the Varicella or Measles-Mumps-Rubella-Varicella (MMRV) vaccine, and
  • the difference between the dose and the effective date is less than 2 months with a 0 (zero) day tolerance.

Previous Versions

Immunization Rules (Colorado) [.2247 - .2307]
Immunization Rules (Colorado) [.2211 - .2243]