WHO Immunization Implementation Guide
0.2.0 - ci-build

WHO Immunization Implementation Guide, published by WHO. This guide is not an authorized publication; it is the continuous build for version 0.2.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/WorldHealthOrganization/smart-immunizations/ and changes regularly. See the Directory of published versions

Library: IMMZD2DTSeasonalinfluenzaEncounterElements

Official URL: http://smart.who.int/immunizations/Library/IMMZD2DTSeasonalinfluenzaEncounterElements Version: 0.2.0
Draft as of 2025-11-25 Computable Name: IMMZD2DTSeasonalinfluenzaEncounterElements

This library defines encounter-based elements for Seasonal influenza used throughout the Immunization CPG

Title: IMMZD2DTSeasonalinfluenzaEncounterElements
Id: IMMZD2DTSeasonalinfluenzaEncounterElements
Version: 0.2.0
Url: IMMZD2DTSeasonalinfluenzaEncounterElements
Status: draft
Type:

system: http://terminology.hl7.org/CodeSystem/library-type

code: logic-library

Date: 2025-11-25 20:07:03+0000
Publisher: WHO
Description:

This library defines encounter-based elements for Seasonal influenza used throughout the Immunization CPG

Related Artifacts:

Dependencies

Parameters:
NameTypeMinMaxIn/Out
Todaydate01In
EncounterIdstring01In
PatientPatient01Out
Seasonal influenza Doses Administered to PatientImmunization0*Out
Seasonal influenza Primary Series Doses Administered to PatientImmunization0*Out
Number of Seasonal influenza Primary Series Doses Administeredinteger01Out
Client's age is less than 6 monthsboolean01Out
No seasonal influenza primary series doses were administeredboolean01Out
Client's age is more than or equal to 6 monthsboolean01Out
One seasonal influenza primary series doses were administeredboolean01Out
Client's age is less than 9 yearsboolean01Out
Date of Latest Seasonal influenza Dosedate01Out
The latest seasonal influenza dose was administered less than 4 weeks agoboolean01Out
The latest seasonal influenza dose was administered more than 4 weeks agoboolean01Out
Client's age is more than or equal to 9 yearsboolean01Out
The latest seasonal influenza dose was administered less than 1 year agoboolean01Out
The latest seasonal influenza dose was administered more than 1 year agoboolean01Out
Two seasonal influenza primary series doses were administeredboolean01Out
Content: text/cql

/*
  * Library: IMMZD2DTSeasonalinfluenzaEncounterElements
  */
library IMMZD2DTSeasonalinfluenzaEncounterElements

using FHIR version '4.0.1'
include FHIRHelpers version '4.0.1'

include WHOConcepts
include WHOCommon called WC
include WHOElements called WE

include IMMZCommon called Common
include IMMZConcepts called Concepts
include IMMZEncounterElements called Encounter

include IMMZD2DTSeasonalinfluenzaElements called SeasonalinfluenzaElements

parameter Today Date default Today()
parameter EncounterId String

context Patient

/*
@internal: Seasonal influenza containing Doses Administered to Patient
*/
define "Seasonal influenza Doses Administered to Patient":
  Encounter."Doses Administered to Patient" I
  where
    I.vaccineCode in Concepts."Seasonal influenza vaccines"

/*
@internal: Seasonal influenza containing Doses Administered to Patient that are in the Primary series
*/
define "Seasonal influenza Primary Series Doses Administered to Patient":
  "Seasonal influenza Doses Administered to Patient".seriesPrimary()

/*
@internal: Number of Seasonal influenza Primary Series doses
*/
define "Number of Seasonal influenza Primary Series Doses Administered":
  Count("Seasonal influenza Primary Series Doses Administered to Patient")

/*
@input: Client's age is less than 6 months
@pseudocode: Today's date − "Date of birth" < 6 months
@code: Client's age is less than 6 months-41
@decision: IMMZ.D2.DT.Seasonal influenza: Inactivated trivalent and quadrivalent vaccines, 2-dose schedule
*/
define "Client's age is less than 6 months":
  Encounter."Current Patient Age In Months" < 6

/*
@input: No seasonal influenza primary series doses were administered
@pseudocode: Count of vaccines administered (where "Vaccine type" = "Seasonal influenza vaccines" and "Type of dose" = "Primary series") = 0
@code: No seasonal influenza primary series doses were administered-127
@decision: IMMZ.D2.DT.Seasonal influenza: Inactivated trivalent and quadrivalent vaccines, 2-dose schedule
*/
define "No seasonal influenza primary series doses were administered":
  "Number of Seasonal influenza Primary Series Doses Administered" = 0

/*
@input: Client's age is more than or equal to 6 months
@pseudocode: Today's date − "Date of birth" ≥ 6 months
@code: Client's age is more than or equal to 6 months-41
@decision: IMMZ.D2.DT.Seasonal influenza: Inactivated trivalent and quadrivalent vaccines, 2-dose schedule
*/
define "Client's age is more than or equal to 6 months":
  Encounter."Current Patient Age In Months" >= 6

/*
@input: One seasonal influenza primary series doses were administered
@pseudocode: Count of vaccines administered (where "Vaccine type" = "Seasonal influenza vaccines" and "Type of dose" = "Primary series") = 1
@code: One seasonal influenza primary series doses were administered-127
@decision: IMMZ.D2.DT.Seasonal influenza: Inactivated trivalent and quadrivalent vaccines, 2-dose schedule
*/
define "One seasonal influenza primary series doses were administered":
  "Number of Seasonal influenza Primary Series Doses Administered" = 1

/*
@input: Client's age is less than 9 years
@pseudocode: Today's date − "Date of birth" < 9 years
@code: Client's age is less than 9 years-40
@decision: IMMZ.D2.DT.Seasonal influenza: Inactivated trivalent and quadrivalent vaccines, 2-dose schedule
*/
define "Client's age is less than 9 years":
  Encounter."Current Patient Age In Years" < 9

/*
@input: The latest seasonal influenza dose was administered less than 4 weeks ago
@pseudocode: Today's date − "Date and time of vaccination" (where "Vaccine type" = "Seasonal influenza vaccines") < 4 weeks
@code: The latest seasonal influenza dose was administered less than 4 weeks ago-110
@decision: IMMZ.D2.DT.Seasonal influenza: Inactivated trivalent and quadrivalent vaccines, 2-dose schedule
*/
define "The latest seasonal influenza dose was administered less than 4 weeks ago":
  "Date of Latest Seasonal influenza Dose" is not null
  and duration in weeks between "Date of Latest Seasonal influenza Dose" and Today < 4

/*
@input: The latest seasonal influenza dose was administered more than 4 weeks ago
@pseudocode: Today's date − "Date and time of vaccination" (where "Vaccine type" = "Seasonal influenza vaccines") ≥ 4 weeks
@code: The latest seasonal influenza dose was administered more than 4 weeks ago-110
@decision: IMMZ.D2.DT.Seasonal influenza: Inactivated trivalent and quadrivalent vaccines, 2-dose schedule
*/
define "The latest seasonal influenza dose was administered more than 4 weeks ago":
  not "The latest seasonal influenza dose was administered less than 4 weeks ago"

/*
@input: Client's age is more than or equal to 9 years
@pseudocode: Today's date − "Date of birth" ≥ 9 years
@code: Client's age is more than or equal to 9 years-40
@decision: IMMZ.D2.DT.Seasonal influenza: Inactivated trivalent and quadrivalent vaccines, 2-dose schedule
*/
define "Client's age is more than or equal to 9 years":
  Encounter."Current Patient Age In Years" >= 9

/*
@input: The latest seasonal influenza dose was administered less than 1 year ago
@pseudocode: Today's date − "Date and time of vaccination" (where "Vaccine type" = "Seasonal influenza vaccines") < 1 year
@code: The latest seasonal influenza dose was administered less than 1 year ago-109
@decision: IMMZ.D2.DT.Seasonal influenza: Inactivated trivalent and quadrivalent vaccines, 2-dose schedule
*/
define "The latest seasonal influenza dose was administered less than 1 year ago":
  "Date of Latest Seasonal influenza Dose" is not null
  and duration in years between "Date of Latest Seasonal influenza Dose" and Today < 1

/*
@input: The latest seasonal influenza dose was administered more than 1 year ago
@pseudocode: Today's date − "Date and time of vaccination" (where "Vaccine type" = "Seasonal influenza vaccines") ≥ 1 year
@code: The latest seasonal influenza dose was administered more than 1 year ago-109
@decision: IMMZ.D2.DT.Seasonal influenza: Inactivated trivalent and quadrivalent vaccines, 2-dose schedule
*/
define "The latest seasonal influenza dose was administered more than 1 year ago":
  not "The latest seasonal influenza dose was administered less than 1 year ago"

/*
@input: Two seasonal influenza primary series doses were administered
@pseudocode: Count of vaccines administered (where "Vaccine type" = "Seasonal influenza vaccines" and "Type of dose" = "Primary series") = 2
@code: Two seasonal influenza primary series doses were administered-127
@decision: IMMZ.D2.DT.Seasonal influenza: Inactivated trivalent and quadrivalent vaccines, 2-dose schedule
*/
define "Two seasonal influenza primary series doses were administered":
  "Number of Seasonal influenza Primary Series Doses Administered" = 2

/*
@internal: Date of Latest Seasonal influenza Dose
*/
define "Date of Latest Seasonal influenza Dose":
  date from start of "Seasonal influenza Doses Administered to Patient".mostRecent().occurrence.toInterval()
Content: application/elm+xml
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