Id: IMMZD18SMeaslesOngoingTransmission Url: IMMZ.D18.S.Measles.Ongoing transmission schedule Version: 1.0.0 Title: IMMZ.D18.S.Measles.Ongoing transmission schedule Status: draft Type: system: http://terminology.hl7.org/CodeSystem/plan-definition-type code: eca-rule Date: 2026-03-31 13:54:17+0000 Publisher: WHO Description: IMMZ.D18.S.Measles.Ongoing transmission schedule Countries with ongoing transmission in which the risk of measles mortality remains high (countries that provide first dose of measles-containing vaccine (MCV) at 9 months and second dose of MCV at 15 months) Knowledge Capability: computable Related Artifacts: References WHO recommendations for routine immunization - summary tables (January 2025) Libraries: IMMZD18SMeaslesOngoingTransmissionLogic Actions: MCV dose 1 (MCV1): Provision of MCV1 from the primary series Trigger event: Child's birth Trigger pseudo: Trigger date: "Date of birth" Create condition: The client is due for MCV1 if the client is at least 9 months of age. If: Applicability: MCV dose 1 (MCV1) (MCV dose 1 (MCV1)) Then: Definition: IMMZ.D2.DT.CR Dynamic Values: status: ('active') payload.contentString: (MCV dose 1 (MCV1) Create) category.coding: (Code { system: 'http://terminology.hl7.org/CodeSystem/communication-category', code: 'alert' }) priority: (Code { system: 'http://hl7.org/fhir/request-priority', code: 'routine' }) MCV2: Provision of the MCV2 from the primary series Trigger event: MCV1 was administered Trigger pseudo: Count of vaccines administered (where "Vaccine type" = "Measles-containing vaccines" and "Type of dose" = "Primary series") = 1 Trigger date: "Date of birth" Create condition: The client is due for MCV2 if the client is at least 15 months of age. If: Applicability: MCV2 (MCV2) Then: Definition: IMMZ.D2.DT.CR Dynamic Values: status: ('active') payload.contentString: (MCV2 Create) category.coding: (Code { system: 'http://terminology.hl7.org/CodeSystem/communication-category', code: 'alert' }) priority: (Code { system: 'http://hl7.org/fhir/request-priority', code: 'routine' })
/** * @dataElement All Doses Administered to Patient */ define "Doses Administered to Patient": [Immunization] I where I.status = 'completed' and I.isSubpotent is not true
/* @internal: MCV Doses Administered to Patient */ define "MCV Doses Administered to Patient": Elements."Doses Administered to Patient" I where I.vaccineCode in Concepts."Measles-containing vaccines"
MCV Primary Series Doses Administered to Patient
/* @internal: MCV Primary Series Doses Administered to Patient */ define "MCV Primary Series Doses Administered to Patient": "MCV Doses Administered to Patient".seriesPrimary()
/* @internal: MCV Primary Series Doses Administered to Patient */ define "MCV Primary Series Doses Administered to Patient": MeaslesElements."MCV Primary Series Doses Administered to Patient".onOrBefore(Today)
Number of MCV Primary Series Doses Administered
/* @internal: Number of MCV Primary Series Doses Administered */ define "Number of MCV Primary Series Doses Administered": Count("MCV Primary Series Doses Administered to Patient")
/* @input: MCV1 was administered @pseudocode: Count of vaccines administered (where "Vaccine type" = "Measles-containing vaccines" and "Type of dose" = "Primary series") = 1 @code: MCV1 was administered-127 @decision: IMMZ.D2.DT.Measles.Ongoing transmission: Countries with ongoing transmission in which the risk of measles mortality remains high (countries that provide first dose of measles-containing vaccine (MCV) at 9 months and second dose of MCV at 15 months) @decision: IMMZ.D2.DT.Measles.Low transmission: Countries with low levels of measles transmission (countries that provide first dose of measles-containing vaccine (MCV) at 12 months and second dose of MCV at 15 months) */ define "MCV1 was administered": "Number of MCV Primary Series Doses Administered" = 1
/* @complete: MCV1 was administered @pseudocode: Count of vaccines administered (where "Vaccine type" = "Measles-containing vaccines" and "Type of dose" = "Primary series") = 1 */ define "MCV1 was administered": Encounter."MCV1 was administered"
/* @input: MCV2 was administered @pseudocode: Count of vaccines administered (where "Vaccine type" = "Measles-containing vaccines" and "Type of dose" = "Primary series") = 2 @code: MCV2 was administered-127 @decision: IMMZ.D2.DT.Measles.Ongoing transmission: Countries with ongoing transmission in which the risk of measles mortality remains high (countries that provide first dose of measles-containing vaccine (MCV) at 9 months and second dose of MCV at 15 months) @decision: IMMZ.D2.DT.Measles.Low transmission: Countries with low levels of measles transmission (countries that provide first dose of measles-containing vaccine (MCV) at 12 months and second dose of MCV at 15 months) */ define "MCV2 was administered": "Number of MCV Primary Series Doses Administered" = 2
MCV2 was administered. The primary series has been completed.
/* @complete: MCV2 was administered. The primary series has been completed. @pseudocode: "Completed the primary vaccination series" = TRUE (where "Vaccine type" = "Measles-containing vaccines") */ define "MCV2 was administered. The primary series has been completed.": Encounter."MCV2 was administered"
/* @output: MCV2 @description: Provision of the MCV2 from the primary series @trigger: MCV1 was administered @pseudo: Count of vaccines administered (where "Vaccine type" = "Measles-containing vaccines" and "Type of dose" = "Primary series") = 1 @triggerDate: "Date of birth" */ define "MCV2": "MCV1 was administered" and not "MCV2 was administered. The primary series has been completed."
/* @dynamicValue: MCV2 Due Date @pseudocode: "Date of birth" + 15 months */ define "MCV2 Due Date": if "MCV2" then Patient.birthDate + 15 months else null
/* @output: MCV2 Create @create: The client is due for MCV2 if the client is at least 15 months of age. */ define "MCV2 Create": if "MCV2" then 'The client is due for MCV2 if the client is at least 15 months of age. Due Date: ' + ToString("MCV2 Due Date") else ''
No measles primary series doses were administered
/* @input: No measles primary series doses were administered @pseudocode: Count of vaccines administered (where "Vaccine type" = "Measles-containing vaccines" and "Type of dose" = "Primary series") = 0 @code: No measles primary series doses were administered-127 @decision: IMMZ.D2.DT.Measles.Ongoing transmission: Countries with ongoing transmission in which the risk of measles mortality remains high (countries that provide first dose of measles-containing vaccine (MCV) at 9 months and second dose of MCV at 15 months) @decision: IMMZ.D2.DT.Measles.Low transmission: Countries with low levels of measles transmission (countries that provide first dose of measles-containing vaccine (MCV) at 12 months and second dose of MCV at 15 months) */ define "No measles primary series doses were administered": "Number of MCV Primary Series Doses Administered" = 0
/* @output: MCV dose 1 (MCV1) @description: Provision of MCV1 from the primary series @trigger: Child's birth @pseudo: @triggerDate: "Date of birth" */ define "MCV dose 1 (MCV1)": Encounter."No measles primary series doses were administered"
/* @dynamicValue: MCV dose 1 (MCV1) Due Date @pseudocode: "Date of birth" + 9 months */ define "MCV dose 1 (MCV1) Due Date": if "MCV dose 1 (MCV1)" then Patient.birthDate + 9 months else null
/* @output: MCV dose 1 (MCV1) Create @create: The client is due for MCV1 if the client is at least 9 months of age. */ define "MCV dose 1 (MCV1) Create": if "MCV dose 1 (MCV1)" then 'The client is due for MCV1 if the client is at least 9 months of age. Due Date: ' + ToString("MCV dose 1 (MCV1) Due Date") else ''
/** * @description: Gets immunizations on or before a date */ define fluent function onOrBefore(immunizations List<Immunization>, beforeDate Date): immunizations I where I.occurrence.toInterval() same day or before beforeDate
/* From FHIRCommon 4.1.0: */ /* @description: Normalizes a value that is a choice of timing-valued types to an equivalent interval @comment: Normalizes a choice type of FHIR.dateTime, FHIR.Period, FHIR.Timing, FHIR.instance, FHIR.string, FHIR.Age, or FHIR.Range types to an equivalent interval. This selection of choice types is a superset of the majority of choice types that are used as possible representations for timing-valued elements in FHIR, allowing this function to be used across any resource. The input can be provided as a dateTime, Period, Timing, instant, string, Age, or Range. The intent of this function is to provide a clear and concise mechanism to treat single elements that have multiple possible representations as intervals so that logic doesn't have to account for the variability. More complex calculations (such as medication request period or dispense period calculation) need specific guidance and consideration. That guidance may make use of this function, but the focus of this function is on single element calculations where the semantics are unambiguous. If the input is a dateTime, the result a DateTime Interval beginning and ending on that dateTime. If the input is a Period, the result is a DateTime Interval. If the input is a Timing, an error is raised indicating a single interval cannot be computed from a Timing. If the input is an instant, the result is a DateTime Interval beginning and ending on that instant. If the input is a string, an error is raised indicating a single interval cannot be computed from a string. If the input is an Age, the result is a DateTime Interval beginning when the patient was the given Age, and ending immediately prior to when the patient was the given Age plus one year. If the input is a Range, the result is a DateTime Interval beginning when the patient was the Age given by the low end of the Range, and ending immediately prior to when the patient was the Age given by the high end of the Range plus one year. NOTE: Due to the complexity of determining a single interval from a Timing or String type, this function will throw a run-time exception if it is used with a Timing or String. */ define fluent function toInterval(choice Choice<FHIR.dateTime, FHIR.Period, FHIR.Timing, FHIR.instant, FHIR.string, FHIR.Age, FHIR.Range>): case when choice is FHIR.dateTime then Interval[FHIRHelpers.ToDateTime(choice as FHIR.dateTime), FHIRHelpers.ToDateTime(choice as FHIR.dateTime)] when choice is FHIR.Period then FHIRHelpers.ToInterval(choice as FHIR.Period) when choice is FHIR.instant then Interval[FHIRHelpers.ToDateTime(choice as FHIR.instant), FHIRHelpers.ToDateTime(choice as FHIR.instant)] when choice is FHIR.Age then Interval[FHIRHelpers.ToDate(Patient.birthDate) + FHIRHelpers.ToQuantity(choice as FHIR.Age), FHIRHelpers.ToDate(Patient.birthDate) + FHIRHelpers.ToQuantity(choice as FHIR.Age) + 1 year) when choice is FHIR.Range then Interval[FHIRHelpers.ToDate(Patient.birthDate) + FHIRHelpers.ToQuantity((choice as FHIR.Range).low), FHIRHelpers.ToDate(Patient.birthDate) + FHIRHelpers.ToQuantity((choice as FHIR.Range).high) + 1 year) when choice is FHIR.Timing then Message(null as Interval<DateTime>, true, 'NOT_IMPLEMENTED', 'Error', 'Calculation of an interval from a Timing value is not supported') when choice is FHIR.string then Message(null as Interval<DateTime>, true, 'NOT_IMPLEMENTED', 'Error', 'Calculation of an interval from a String value is not supported') else null as Interval<DateTime> end
define function ToDateTime(value dateTime): value.value
define function ToInterval(period FHIR.Period): if period is null then null else if period."start" is null then Interval(period."start".value, period."end".value] else Interval[period."start".value, period."end".value]
define function ToDateTime(value instant): value.value
define function ToDate(value date): value.value
define function ToQuantity(quantity FHIR.Quantity): case when quantity is null then null when quantity.value is null then null when quantity.comparator is not null then Message(null, true, 'FHIRHelpers.ToQuantity.ComparatorQuantityNotSupported', 'Error', 'FHIR Quantity value has a comparator and cannot be converted to a System.Quantity value.') when quantity.system is null or quantity.system.value = 'http://unitsofmeasure.org' or quantity.system.value = 'http://hl7.org/fhirpath/CodeSystem/calendar-units' then System.Quantity { value: quantity.value.value, unit: ToCalendarUnit(Coalesce(quantity.code.value, quantity.unit.value, '1')) } else Message(null, true, 'FHIRHelpers.ToQuantity.InvalidFHIRQuantity', 'Error', 'Invalid FHIR Quantity code: ' & quantity.unit.value & ' (' & quantity.system.value & '|' & quantity.code.value & ')') end
define function ToCalendarUnit(unit System.String): case unit when 'ms' then 'millisecond' when 's' then 'second' when 'min' then 'minute' when 'h' then 'hour' when 'd' then 'day' when 'wk' then 'week' when 'mo' then 'month' when 'a' then 'year' else unit end
/** * @description: Gets the doses from the primary series */ define fluent function seriesPrimary(immunizations List<Immunization>): immunizations I where exists( I.protocolApplied pa where pa.series = 'Primary series' )
define function ToString(value string): value.value
define function ToString(value ImmunizationStatus): value.value
define function ToBoolean(value boolean): value.value
define function ToConcept(concept FHIR.CodeableConcept): if concept is null then null else System.Concept { codes: concept.coding C return ToCode(C), display: concept.text.value }
define function ToCode(coding FHIR.Coding): if coding is null then null else System.Code { code: coding.code.value, system: coding.system.value, version: coding.version.value, display: coding.display.value }
IMMZ.D18.S.Measles.Ongoing transmission schedule
IMMZ.D18.S.Measles.Ongoing transmission schedule Countries with ongoing transmission in which the risk of measles mortality remains high (countries that provide first dose of measles-containing vaccine (MCV) at 9 months and second dose of MCV at 15 months)
WHO recommendations for routine immunization - summary tables (January 2025)
Provision of MCV1 from the primary series Trigger event: Child's birth Trigger pseudo: Trigger date: "Date of birth" Create condition: The client is due for MCV1 if the client is at least 9 months of age.
Code { system: 'http://terminology.hl7.org/CodeSystem/communication-category', code: 'alert' }
Code { system: 'http://hl7.org/fhir/request-priority', code: 'routine' }
Provision of the MCV2 from the primary series Trigger event: MCV1 was administered Trigger pseudo: Count of vaccines administered (where "Vaccine type" = "Measles-containing vaccines" and "Type of dose" = "Primary series") = 1 Trigger date: "Date of birth" Create condition: The client is due for MCV2 if the client is at least 15 months of age.