WHO Immunization Implementation Guide
1.0.0 - release

WHO Immunization Implementation Guide, published by WHO. This guide is not an authorized publication; it is the continuous build for version 1.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/WorldHealthOrganization/smart-immunizations/tree/132/merge and changes regularly. See the Directory of published versions

: IMMZ.D18.S.Seasonal influenza schedule - XML Representation

Draft as of 2026-03-31

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<PlanDefinition xmlns="http://hl7.org/fhir">
  <id value="IMMZD18SSeasonalinfluenzaSeasonalInfluenza"/>
  <meta>
    <profile
             value="http://hl7.org/fhir/uv/cpg/StructureDefinition/cpg-recommendationdefinition"/>
    <profile
             value="http://hl7.org/fhir/uv/crmi/StructureDefinition/crmi-shareableplandefinition"/>
    <profile
             value="http://hl7.org/fhir/uv/crmi/StructureDefinition/crmi-publishableplandefinition"/>
  </meta>
  <text>
    <status value="extensions"/>
    <div xmlns="http://www.w3.org/1999/xhtml">
<div>
    <table class="grid dict">
        
        <tr>
            <th scope="row"><b>Id: </b></th>
            <td style="padding-left: 4px;">IMMZD18SSeasonalinfluenzaSeasonalInfluenza</td>
        </tr>
        

        
        <tr>
            <th scope="row"><b>Url: </b></th>
            <td style="padding-left: 4px;"><a href="PlanDefinition-IMMZD18SSeasonalinfluenzaSeasonalInfluenza.html">IMMZ.D18.S.Seasonal influenza schedule</a></td>
        </tr>
        

        
        <tr>
            <th scope="row"><b>Version: </b></th>
            <td style="padding-left: 4px;">1.0.0</td>
        </tr>
        

        

        
        <tr>
            <th scope="row"><b>Title: </b></th>
            <td style="padding-left: 4px;">IMMZ.D18.S.Seasonal influenza schedule</td>
        </tr>
        

        

        
        <tr>
            <th scope="row"><b>Status: </b></th>
            <td style="padding-left: 4px;">draft</td>
        </tr>
        

        

        
        <tr>
            <th scope="row"><b>Type: </b></th>
            <td style="padding-left: 4px;">
                
                    
                        
                        <p style="margin-bottom: 5px;">
                            <b>system: </b> <span><a href="http://terminology.hl7.org/7.1.0/CodeSystem-plan-definition-type.html">http://terminology.hl7.org/CodeSystem/plan-definition-type</a></span>
                        </p>
                        
                        
                        <p style="margin-bottom: 5px;">
                            <b>code: </b> <span>eca-rule</span>
                        </p>
                        
                        
                    
                
                
            </td>
        </tr>
        

        

        
        <tr>
            <th scope="row"><b>Date: </b></th>
            <td style="padding-left: 4px;">2026-03-31 13:54:17+0000</td>
        </tr>
        

        
        <tr>
            <th scope="row"><b>Publisher: </b></th>
            <td style="padding-left: 4px;">WHO</td>
        </tr>
        

        
        <tr>
            <th scope="row"><b>Description: </b></th>
            <td style="padding-left: 4px;"><div><p>IMMZ.D18.S.Seasonal influenza schedule
Inactivated trivalent and quadrivalent vaccines, 2-dose schedule for children aged under 9 years</p>
</div></td>
        </tr>
        

        
        <tr>
            <th scope="row"><b>Knowledge Capability: </b></th>
            <td style="padding-left: 4px;">
                
                computable 
            </td>
        </tr>
        

        

        

        

        

        

        

        

        

        

        
        <tr>
            <th scope="row"><b>Related Artifacts: </b></th>
            <td style="padding-left: 4px;">
                
                
                <p><b>References</b></p>
                <ul>
                    
                    <li><div><p>WHO recommendations for routine immunization - summary tables (January 2025)</p>
</div><br/><a href="null"/></li>
                    
                </ul>
                
                
                
                
                
                
            </td>
        </tr>
        

        
        <tr>
            <th scope="row"><b>Libraries: </b></th>
            <td style="padding-left: 4px;">
                <table class="grid-dict">
                    
                    <tr>
                        <td><a href="Library-IMMZD18SSeasonalinfluenzaSeasonalInfluenzaLogic.html">IMMZD18SSeasonalinfluenzaSeasonalInfluenzaLogic</a></td>
                    </tr>
                    
                </table>
            </td>
        </tr>
        

        
        <tr>
            <th scope="row"><b>Actions: </b></th>
            <td style="padding-left: 4px;">
                <table class="grid-dict">
                    
                    <tr>
                        <td>
                            
                            <b> Seasonal influenza dose 1:</b> Provision of the seasonal influenza vaccine dose 1
Trigger event: Child's birth
Trigger pseudo: 
Trigger date: &quot;Date of birth&quot;
Create condition: Influenza vaccines are safe and effective in children from 6 months of age
                            
                            <br/>
                            
                            
                            <b>If:</b>
                            
                            <i>Applicability:</i>
                            
                            Seasonal influenza dose 1
                            
                            <i>(Seasonal influenza dose 1)</i>
                            <br/>
                            
                            
                            
                            
                            <b>Then:</b> <i>Definition:</i> <a href="ActivityDefinition-IMMZD2DTCR.html">IMMZ.D2.DT.CR</a><br/>
                            
                            <i>Dynamic Values:</i><br/>
                            
                            status: <i>('active')</i>
                            <br/>
                            
                            payload.contentString: <i>(Seasonal influenza dose 1 Create)</i>
                            <br/>
                            
                            category.coding: <i>(Code { system: 'http://terminology.hl7.org/CodeSystem/communication-category', code: 'alert' })</i>
                            <br/>
                            
                            priority: <i>(Code { system: 'http://hl7.org/fhir/request-priority', code: 'routine' })</i>
                            <br/>
                            
                            
                            
                            
                        </td>
                    </tr>
                    
                    <tr>
                        <td>
                            
                            <b> Seasonal influenza dose 2:</b> Provision of the seasonal influenza vaccine dose 2
Trigger event: First seasonal influenza dose from the primary series was administered and client is less than 9 years
Trigger pseudo: Count of vaccines administered (where &quot;Vaccine type&quot; = &quot;Seasonal influenza vaccines&quot; and &quot;Type of dose&quot; = &quot;Primary series&quot;) = 1 AND (Today's date − &quot;Date of birth&quot; &lt; 9 years)
Trigger date: &quot;Date and time of vaccination&quot; (where &quot;Vaccine type&quot; = &quot;Seasonal influenza vaccines&quot;)
Create condition: Children aged 6 months to 8 years should receive 2 doses at least 4 weeks apart
                            
                            <br/>
                            
                            
                            <b>If:</b>
                            
                            <i>Applicability:</i>
                            
                            Seasonal influenza dose 2
                            
                            <i>(Seasonal influenza dose 2)</i>
                            <br/>
                            
                            
                            
                            
                            <b>Then:</b> <i>Definition:</i> <a href="ActivityDefinition-IMMZD2DTCR.html">IMMZ.D2.DT.CR</a><br/>
                            
                            <i>Dynamic Values:</i><br/>
                            
                            status: <i>('active')</i>
                            <br/>
                            
                            payload.contentString: <i>(Seasonal influenza dose 2 Create)</i>
                            <br/>
                            
                            category.coding: <i>(Code { system: 'http://terminology.hl7.org/CodeSystem/communication-category', code: 'alert' })</i>
                            <br/>
                            
                            priority: <i>(Code { system: 'http://hl7.org/fhir/request-priority', code: 'routine' })</i>
                            <br/>
                            
                            
                            
                            
                        </td>
                    </tr>
                    
                    <tr>
                        <td>
                            
                            <b> Seasonal influenza annual dose:</b> Provision of the seasonal influenza vaccine annual dose
Trigger event: The primary series has been completed
Trigger pseudo: &quot;Completed the primary vaccination series&quot; = TRUE (where &quot;Vaccine type&quot; = &quot;Seasonal influenza vaccines&quot;)
Trigger date: Latest &quot;Date and time of vaccination&quot; (where &quot;Vaccine type&quot; = &quot;Seasonal influenza vaccines&quot;)
Create condition: Seasonal influenza vaccine annual dose should be provided 1 year after the previous dose
                            
                            <br/>
                            
                            
                            <b>If:</b>
                            
                            <i>Applicability:</i>
                            
                            Seasonal influenza annual dose
                            
                            <i>(Seasonal influenza annual dose)</i>
                            <br/>
                            
                            
                            
                            
                            <b>Then:</b> <i>Definition:</i> <a href="ActivityDefinition-IMMZD2DTCR.html">IMMZ.D2.DT.CR</a><br/>
                            
                            <i>Dynamic Values:</i><br/>
                            
                            status: <i>('active')</i>
                            <br/>
                            
                            payload.contentString: <i>(Seasonal influenza annual dose Create)</i>
                            <br/>
                            
                            category.coding: <i>(Code { system: 'http://terminology.hl7.org/CodeSystem/communication-category', code: 'alert' })</i>
                            <br/>
                            
                            priority: <i>(Code { system: 'http://hl7.org/fhir/request-priority', code: 'routine' })</i>
                            <br/>
                            
                            
                            
                            
                        </td>
                    </tr>
                    
                </table>
            </td>
        </tr>
        
    </table>
</div>
</div>
  </text>
  <contained>
    <Library>
      <id value="effective-data-requirements"/>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString value="IMMZElements"/>
        </extension>
        <extension url="name">
          <valueString value="Doses Administered to Patient"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="/**
 * @dataElement All Doses Administered to Patient
 */
define &quot;Doses Administered to Patient&quot;:
  [Immunization] I
    where I.status = 'completed'
    and I.isSubpotent is not true"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="0"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString value="IMMZEncounterElements"/>
        </extension>
        <extension url="name">
          <valueString value="Doses Administered to Patient"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="/**
 * @dataElement All Doses Administered to Patient
 */
define &quot;Doses Administered to Patient&quot;:
  Elements.&quot;Doses Administered to Patient&quot; I
    where I.occurrence.toInterval() same day or before Today"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="1"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString value="IMMZD2DTSeasonalinfluenzaEncounterElements"/>
        </extension>
        <extension url="name">
          <valueString
                       value="Seasonal influenza Doses Administered to Patient"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="/*
@internal: Seasonal influenza containing Doses Administered to Patient
*/
define &quot;Seasonal influenza Doses Administered to Patient&quot;:
  Encounter.&quot;Doses Administered to Patient&quot; I
  where
    I.vaccineCode in Concepts.&quot;Seasonal influenza vaccines&quot;"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="2"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString value="IMMZD2DTSeasonalinfluenzaEncounterElements"/>
        </extension>
        <extension url="name">
          <valueString
                       value="Seasonal influenza Primary Series Doses Administered to Patient"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="/*
@internal: Seasonal influenza containing Doses Administered to Patient that are in the Primary series
*/
define &quot;Seasonal influenza Primary Series Doses Administered to Patient&quot;:
  &quot;Seasonal influenza Doses Administered to Patient&quot;.seriesPrimary()"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="3"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString value="IMMZD2DTSeasonalinfluenzaEncounterElements"/>
        </extension>
        <extension url="name">
          <valueString
                       value="Number of Seasonal influenza Primary Series Doses Administered"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="/*
@internal: Number of Seasonal influenza Primary Series doses
*/
define &quot;Number of Seasonal influenza Primary Series Doses Administered&quot;:
  Count(&quot;Seasonal influenza Primary Series Doses Administered to Patient&quot;)"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="4"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString value="IMMZD2DTSeasonalinfluenzaEncounterElements"/>
        </extension>
        <extension url="name">
          <valueString
                       value="One seasonal influenza primary series doses were administered"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="/*
@input: One seasonal influenza primary series doses were administered
@pseudocode: Count of vaccines administered (where &quot;Vaccine type&quot; = &quot;Seasonal influenza vaccines&quot; and &quot;Type of dose&quot; = &quot;Primary series&quot;) = 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 &quot;One seasonal influenza primary series doses were administered&quot;:
  &quot;Number of Seasonal influenza Primary Series Doses Administered&quot; = 1"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="5"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString
                       value="IMMZD18SSeasonalinfluenzaSeasonalInfluenzaLogic"/>
        </extension>
        <extension url="name">
          <valueString
                       value="First seasonal influenza dose from the primary series was administered"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="/*
@complete: First seasonal influenza dose from the primary series was administered
@pseudocode: Count of vaccines administered (where &quot;Vaccine type&quot; = &quot;Seasonal influenza vaccines&quot; and &quot;Type of dose&quot; = &quot;Primary series&quot;) = 1
*/
define &quot;First seasonal influenza dose from the primary series was administered&quot;:
  Encounter.&quot;One seasonal influenza primary series doses were administered&quot;"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="6"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString value="IMMZEncounterElements"/>
        </extension>
        <extension url="name">
          <valueString value="Current Patient Age In Years"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="/** 
 * @dataElement Patient age in years
 */
define &quot;Current Patient Age In Years&quot;:
  AgeInYearsAt(Today)"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="7"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString value="IMMZD2DTSeasonalinfluenzaEncounterElements"/>
        </extension>
        <extension url="name">
          <valueString value="Client's age is less than 9 years"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="/*
@input: Client's age is less than 9 years
@pseudocode: Today's date − &quot;Date of birth&quot; &lt; 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 &quot;Client's age is less than 9 years&quot;:
  Encounter.&quot;Current Patient Age In Years&quot; &lt; 9"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="8"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString value="IMMZD2DTSeasonalinfluenzaEncounterElements"/>
        </extension>
        <extension url="name">
          <valueString
                       value="Two seasonal influenza primary series doses were administered"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="/*
@input: Two seasonal influenza primary series doses were administered
@pseudocode: Count of vaccines administered (where &quot;Vaccine type&quot; = &quot;Seasonal influenza vaccines&quot; and &quot;Type of dose&quot; = &quot;Primary series&quot;) = 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 &quot;Two seasonal influenza primary series doses were administered&quot;:
  &quot;Number of Seasonal influenza Primary Series Doses Administered&quot; = 2"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="9"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString
                       value="IMMZD18SSeasonalinfluenzaSeasonalInfluenzaLogic"/>
        </extension>
        <extension url="name">
          <valueString
                       value="Second seasonal influenza dose from the primary series was administered. The primary series has been completed"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="/*
@complete: Second seasonal influenza dose from the primary series was administered. The primary series has been completed
@pseudocode: &quot;Completed the primary vaccination series&quot; = TRUE (where &quot;Vaccine type&quot; = &quot;Seasonal influenza vaccines&quot;)
*/
define &quot;Second seasonal influenza dose from the primary series was administered. The primary series has been completed&quot;:
  Encounter.&quot;Two seasonal influenza primary series doses were administered&quot;"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="10"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString
                       value="IMMZD18SSeasonalinfluenzaSeasonalInfluenzaLogic"/>
        </extension>
        <extension url="name">
          <valueString value="Seasonal influenza dose 2"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="/*
@output: Seasonal influenza dose 2
@description: Provision of the seasonal influenza vaccine dose 2
@trigger: First seasonal influenza dose from the primary series was administered and client is less than 9 years
@pseudo: Count of vaccines administered (where &quot;Vaccine type&quot; = &quot;Seasonal influenza vaccines&quot; and &quot;Type of dose&quot; = &quot;Primary series&quot;) = 1 AND (Today's date − &quot;Date of birth&quot; &lt; 9 years)
@triggerDate: &quot;Date and time of vaccination&quot; (where &quot;Vaccine type&quot; = &quot;Seasonal influenza vaccines&quot;)
*/
define &quot;Seasonal influenza dose 2&quot;:
  &quot;First seasonal influenza dose from the primary series was administered&quot;
  and Encounter.&quot;Client's age is less than 9 years&quot;
  and not &quot;Second seasonal influenza dose from the primary series was administered. The primary series has been completed&quot;"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="11"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString value="IMMZD2DTSeasonalinfluenzaEncounterElements"/>
        </extension>
        <extension url="name">
          <valueString value="Date of Latest Seasonal influenza Dose"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="/*
@internal: Date of Latest Seasonal influenza Dose
*/
define &quot;Date of Latest Seasonal influenza Dose&quot;:
  date from start of &quot;Seasonal influenza Doses Administered to Patient&quot;.mostRecent().occurrence.toInterval()"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="12"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString
                       value="IMMZD18SSeasonalinfluenzaSeasonalInfluenzaLogic"/>
        </extension>
        <extension url="name">
          <valueString value="Seasonal influenza dose 2 Due Date"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="/*
@dynamicValue: Seasonal influenza dose 2 Due Date
@pseudocode: &quot;Date and time of vaccination&quot; (where &quot;Vaccine type&quot; = &quot;Seasonal influenza vaccines&quot;) + 4 weeks
*/
define &quot;Seasonal influenza dose 2 Due Date&quot;:
  if &quot;Seasonal influenza dose 2&quot; then Encounter.&quot;Date of Latest Seasonal influenza Dose&quot; + 4 weeks
  else null"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="13"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString
                       value="IMMZD18SSeasonalinfluenzaSeasonalInfluenzaLogic"/>
        </extension>
        <extension url="name">
          <valueString value="Seasonal influenza dose 2 Expiration"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="/*
@dynamicValue: Seasonal influenza dose 2 Expiration
@pseudocode: &quot;Date of birth&quot; + 9 years
*/
define &quot;Seasonal influenza dose 2 Expiration&quot;:
  if &quot;Seasonal influenza dose 2&quot; then Patient.birthDate + 9 years
  else null"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="14"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString
                       value="IMMZD18SSeasonalinfluenzaSeasonalInfluenzaLogic"/>
        </extension>
        <extension url="name">
          <valueString value="Seasonal influenza dose 2 Create"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="/*
@output: Seasonal influenza dose 2 Create
@create: Children aged 6 months to 8 years should receive 2 doses at least 4 weeks apart
*/
define &quot;Seasonal influenza dose 2 Create&quot;:
  if &quot;Seasonal influenza dose 2&quot;
  then 'Children aged 6 months to 8 years should receive 2 doses at least 4 weeks apart' + '
Due Date: ' + ToString(&quot;Seasonal influenza dose 2 Due Date&quot;) + '
Expiration: ' + ToString(&quot;Seasonal influenza dose 2 Expiration&quot;)
  else ''"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="15"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString value="IMMZD2DTSeasonalinfluenzaEncounterElements"/>
        </extension>
        <extension url="name">
          <valueString
                       value="No seasonal influenza primary series doses were administered"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="/*
@input: No seasonal influenza primary series doses were administered
@pseudocode: Count of vaccines administered (where &quot;Vaccine type&quot; = &quot;Seasonal influenza vaccines&quot; and &quot;Type of dose&quot; = &quot;Primary series&quot;) = 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 &quot;No seasonal influenza primary series doses were administered&quot;:
  &quot;Number of Seasonal influenza Primary Series Doses Administered&quot; = 0"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="16"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString
                       value="IMMZD18SSeasonalinfluenzaSeasonalInfluenzaLogic"/>
        </extension>
        <extension url="name">
          <valueString value="Seasonal influenza dose 1"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="/*
@output: Seasonal influenza dose 1
@description: Provision of the seasonal influenza vaccine dose 1
@trigger: Child's birth
@pseudo: 
@triggerDate: &quot;Date of birth&quot;
*/
define &quot;Seasonal influenza dose 1&quot;:
  Encounter.&quot;No seasonal influenza primary series doses were administered&quot;
  and not &quot;First seasonal influenza dose from the primary series was administered&quot;"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="17"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString
                       value="IMMZD18SSeasonalinfluenzaSeasonalInfluenzaLogic"/>
        </extension>
        <extension url="name">
          <valueString value="Seasonal influenza dose 1 Due Date"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="/*
@dynamicValue: Seasonal influenza dose 1 Due Date
@pseudocode: &quot;Date of birth&quot; + 6 months
*/
define &quot;Seasonal influenza dose 1 Due Date&quot;:
  if &quot;Seasonal influenza dose 1&quot; then Patient.birthDate + 6 months
  else null"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="18"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString
                       value="IMMZD18SSeasonalinfluenzaSeasonalInfluenzaLogic"/>
        </extension>
        <extension url="name">
          <valueString value="Seasonal influenza dose 1 Create"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="/*
@output: Seasonal influenza dose 1 Create
@create: Influenza vaccines are safe and effective in children from 6 months of age
*/
define &quot;Seasonal influenza dose 1 Create&quot;:
  if &quot;Seasonal influenza dose 1&quot;
  then 'Influenza vaccines are safe and effective in children from 6 months of age' + '
Due Date: ' + ToString(&quot;Seasonal influenza dose 1 Due Date&quot;)
  else ''"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="19"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString value="IMMZD2DTSeasonalinfluenzaEncounterElements"/>
        </extension>
        <extension url="name">
          <valueString value="Client's age is more than or equal to 9 years"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="/*
@input: Client's age is more than or equal to 9 years
@pseudocode: Today's date − &quot;Date of birth&quot; ≥ 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 &quot;Client's age is more than or equal to 9 years&quot;:
  Encounter.&quot;Current Patient Age In Years&quot; &gt;= 9"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="20"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString
                       value="IMMZD18SSeasonalinfluenzaSeasonalInfluenzaLogic"/>
        </extension>
        <extension url="name">
          <valueString value="Seasonal influenza annual dose"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="/*
@output: Seasonal influenza annual dose
@description: Provision of the seasonal influenza vaccine annual dose
@trigger: The primary series has been completed
@pseudo: &quot;Completed the primary vaccination series&quot; = TRUE (where &quot;Vaccine type&quot; = &quot;Seasonal influenza vaccines&quot;)
@triggerDate: Latest &quot;Date and time of vaccination&quot; (where &quot;Vaccine type&quot; = &quot;Seasonal influenza vaccines&quot;)
*/
define &quot;Seasonal influenza annual dose&quot;:
  ( &quot;Second seasonal influenza dose from the primary series was administered. The primary series has been completed&quot;
  or ( &quot;First seasonal influenza dose from the primary series was administered&quot;
    and Encounter.&quot;Client's age is more than or equal to 9 years&quot;
   ) )"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="21"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString
                       value="IMMZD18SSeasonalinfluenzaSeasonalInfluenzaLogic"/>
        </extension>
        <extension url="name">
          <valueString value="Seasonal influenza annual dose Due Date"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="/*
@dynamicValue: Seasonal influenza annual dose Due Date
@pseudocode: Latest &quot;Date and time of vaccination&quot; (where &quot;Vaccine type&quot; = &quot;Seasonal influenza vaccines&quot;) + 1 year
*/
define &quot;Seasonal influenza annual dose Due Date&quot;:
  if &quot;Seasonal influenza annual dose&quot; then Encounter.&quot;Date of Latest Seasonal influenza Dose&quot; + 1 year
  else null"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="22"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString
                       value="IMMZD18SSeasonalinfluenzaSeasonalInfluenzaLogic"/>
        </extension>
        <extension url="name">
          <valueString value="Seasonal influenza annual dose Create"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="/*
@output: Seasonal influenza annual dose Create
@create: Seasonal influenza vaccine annual dose should be provided 1 year after the previous dose
*/
define &quot;Seasonal influenza annual dose Create&quot;:
  if &quot;Seasonal influenza annual dose&quot;
  then 'Seasonal influenza vaccine annual dose should be provided 1 year after the previous dose' + '
Due Date: ' + ToString(&quot;Seasonal influenza annual dose Due Date&quot;)
  else ''"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="23"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString value="IMMZCommon"/>
        </extension>
        <extension url="name">
          <valueString value="seriesPrimary"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="/**
 * @description: Gets the doses from the primary series
 */
define fluent function seriesPrimary(immunizations List&lt;Immunization&gt;):
  immunizations I where
    exists( I.protocolApplied pa where pa.series = 'Primary series' )"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="24"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString value="FHIRHelpers"/>
        </extension>
        <extension url="name">
          <valueString value="ToString"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="define function ToString(value string): value.value"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="25"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString value="FHIRHelpers"/>
        </extension>
        <extension url="name">
          <valueString value="ToString"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="define function ToString(value ImmunizationStatus): value.value"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="26"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString value="FHIRHelpers"/>
        </extension>
        <extension url="name">
          <valueString value="ToBoolean"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="define function ToBoolean(value boolean): value.value"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="27"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString value="WHOCommon"/>
        </extension>
        <extension url="name">
          <valueString value="toInterval"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="/*
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&lt;FHIR.dateTime, FHIR.Period, FHIR.Timing, FHIR.instant, FHIR.string, FHIR.Age, FHIR.Range&gt;):
  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&lt;DateTime&gt;, 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&lt;DateTime&gt;, true, 'NOT_IMPLEMENTED', 'Error', 'Calculation of an interval from a String value is not supported')
    else
      null as Interval&lt;DateTime&gt;
  end"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="28"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString value="FHIRHelpers"/>
        </extension>
        <extension url="name">
          <valueString value="ToDateTime"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="define function ToDateTime(value dateTime): value.value"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="29"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString value="FHIRHelpers"/>
        </extension>
        <extension url="name">
          <valueString value="ToInterval"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="define function ToInterval(period FHIR.Period):
    if period is null then
        null
    else
        if period.&quot;start&quot; is null then
            Interval(period.&quot;start&quot;.value, period.&quot;end&quot;.value]
        else
            Interval[period.&quot;start&quot;.value, period.&quot;end&quot;.value]"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="30"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString value="FHIRHelpers"/>
        </extension>
        <extension url="name">
          <valueString value="ToDateTime"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="define function ToDateTime(value instant): value.value"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="31"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString value="FHIRHelpers"/>
        </extension>
        <extension url="name">
          <valueString value="ToDate"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="define function ToDate(value date): value.value"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="32"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString value="FHIRHelpers"/>
        </extension>
        <extension url="name">
          <valueString value="ToQuantity"/>
        </extension>
        <extension url="statement">
          <valueString
                       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: ' &amp; quantity.unit.value &amp; ' (' &amp; quantity.system.value &amp; '|' &amp; quantity.code.value &amp; ')')
    end"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="33"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString value="FHIRHelpers"/>
        </extension>
        <extension url="name">
          <valueString value="ToCalendarUnit"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="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"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="34"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString value="FHIRHelpers"/>
        </extension>
        <extension url="name">
          <valueString value="ToConcept"/>
        </extension>
        <extension url="statement">
          <valueString
                       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
        }"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="35"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString value="FHIRHelpers"/>
        </extension>
        <extension url="name">
          <valueString value="ToCode"/>
        </extension>
        <extension url="statement">
          <valueString
                       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
        }"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="36"/>
        </extension>
      </extension>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition">
        <extension url="libraryName">
          <valueString value="WHOCommon"/>
        </extension>
        <extension url="name">
          <valueString value="mostRecent"/>
        </extension>
        <extension url="statement">
          <valueString
                       value="define fluent function mostRecent(immunizations List&lt;Immunization&gt;):
  Last(
    immunizations I
      sort by start of occurrence.toInterval()
  )"/>
        </extension>
        <extension url="displaySequence">
          <valueInteger value="37"/>
        </extension>
      </extension>
      <name value="EffectiveDataRequirements"/>
      <status value="active"/>
      <type>
        <coding>
          <system value="http://terminology.hl7.org/CodeSystem/library-type"/>
          <code value="module-definition"/>
        </coding>
      </type>
      <relatedArtifact>
        <type value="depends-on"/>
        <display value="FHIR model information"/>
        <resource
                  value="http://fhir.org/guides/cqf/common/Library/FHIR-ModelInfo|4.0.1"/>
      </relatedArtifact>
      <relatedArtifact>
        <type value="depends-on"/>
        <display value="Library Encounter"/>
        <resource
                  value="http://smart.who.int/immunizations/Library/IMMZD2DTSeasonalinfluenzaEncounterElements"/>
      </relatedArtifact>
      <relatedArtifact>
        <type value="depends-on"/>
        <display value="Library Common"/>
        <resource
                  value="http://smart.who.int/immunizations/Library/IMMZCommon"/>
      </relatedArtifact>
      <relatedArtifact>
        <type value="depends-on"/>
        <display value="Library FHIRHelpers"/>
        <resource
                  value="http://fhir.org/guides/cqf/common/Library/FHIRHelpers|4.0.1"/>
      </relatedArtifact>
      <relatedArtifact>
        <type value="depends-on"/>
        <display value="Library Encounter"/>
        <resource
                  value="http://smart.who.int/immunizations/Library/IMMZEncounterElements"/>
      </relatedArtifact>
      <relatedArtifact>
        <type value="depends-on"/>
        <display value="Library Elements"/>
        <resource
                  value="http://smart.who.int/immunizations/Library/IMMZElements"/>
      </relatedArtifact>
      <relatedArtifact>
        <type value="depends-on"/>
        <display value="Library WC"/>
        <resource
                  value="http://smart.who.int/immunizations/Library/WHOCommon"/>
      </relatedArtifact>
      <relatedArtifact>
        <type value="depends-on"/>
        <display value="Library Concepts"/>
        <resource
                  value="http://smart.who.int/immunizations/Library/IMMZConcepts"/>
      </relatedArtifact>
      <relatedArtifact>
        <type value="depends-on"/>
        <display value="Value set Seasonal influenza vaccines"/>
        <resource
                  value="http://smart.who.int/immunizations/ValueSet/IMMZ.Z.DE18"/>
      </relatedArtifact>
      <parameter>
        <name value="Today"/>
        <use value="in"/>
        <min value="0"/>
        <max value="1"/>
        <type value="date"/>
      </parameter>
      <parameter>
        <name value="Seasonal influenza dose 2 Create"/>
        <use value="out"/>
        <min value="0"/>
        <max value="1"/>
        <type value="string"/>
      </parameter>
      <parameter>
        <name value="Seasonal influenza dose 1 Create"/>
        <use value="out"/>
        <min value="0"/>
        <max value="1"/>
        <type value="string"/>
      </parameter>
      <parameter>
        <name value="Seasonal influenza dose 1"/>
        <use value="out"/>
        <min value="0"/>
        <max value="1"/>
        <type value="boolean"/>
      </parameter>
      <parameter>
        <name value="Seasonal influenza dose 2"/>
        <use value="out"/>
        <min value="0"/>
        <max value="1"/>
        <type value="boolean"/>
      </parameter>
      <parameter>
        <name value="Seasonal influenza annual dose"/>
        <use value="out"/>
        <min value="0"/>
        <max value="1"/>
        <type value="boolean"/>
      </parameter>
      <parameter>
        <name value="Seasonal influenza annual dose Create"/>
        <use value="out"/>
        <min value="0"/>
        <max value="1"/>
        <type value="string"/>
      </parameter>
      <dataRequirement>
        <type value="Immunization"/>
        <profile
                 value="http://hl7.org/fhir/StructureDefinition/Immunization"/>
        <mustSupport value="status"/>
        <mustSupport value="isSubpotent"/>
        <mustSupport value="protocolApplied"/>
        <mustSupport value="occurrence"/>
        <codeFilter>
          <path value="status"/>
          <code>
            <code value="completed"/>
          </code>
        </codeFilter>
      </dataRequirement>
      <dataRequirement>
        <type value="Immunization"/>
        <profile
                 value="http://hl7.org/fhir/StructureDefinition/Immunization"/>
        <mustSupport value="occurrence"/>
        <mustSupport value="protocolApplied"/>
      </dataRequirement>
      <dataRequirement>
        <type value="Immunization"/>
        <profile
                 value="http://hl7.org/fhir/StructureDefinition/Immunization"/>
        <mustSupport value="status"/>
        <mustSupport value="isSubpotent"/>
        <mustSupport value="occurrence"/>
        <mustSupport value="vaccineCode"/>
        <mustSupport value="protocolApplied"/>
        <codeFilter>
          <path value="status"/>
          <code>
            <code value="completed"/>
          </code>
        </codeFilter>
        <codeFilter>
          <path value="vaccineCode"/>
          <valueSet
                    value="http://smart.who.int/immunizations/ValueSet/IMMZ.Z.DE18"/>
        </codeFilter>
      </dataRequirement>
      <dataRequirement>
        <type value="Patient"/>
        <profile value="http://hl7.org/fhir/StructureDefinition/Patient"/>
        <mustSupport value="birthDate"/>
      </dataRequirement>
    </Library>
  </contained>
  <extension
             url="http://hl7.org/fhir/uv/cpg/StructureDefinition/cpg-knowledgeCapability">
    <valueCode value="computable"/>
  </extension>
  <extension
             url="http://hl7.org/fhir/uv/crmi/StructureDefinition/crmi-effectiveDataRequirements">
    <valueCanonical value="#effective-data-requirements"/>
  </extension>
  <url
       value="http://smart.who.int/immunizations/PlanDefinition/IMMZD18SSeasonalinfluenzaSeasonalInfluenza"/>
  <version value="1.0.0"/>
  <name value="IMMZD18SSeasonalinfluenzaSeasonalInfluenza"/>
  <title value="IMMZ.D18.S.Seasonal influenza schedule"/>
  <type>
    <coding>
      <system
              value="http://terminology.hl7.org/CodeSystem/plan-definition-type"/>
      <code value="eca-rule"/>
    </coding>
  </type>
  <status value="draft"/>
  <experimental value="false"/>
  <date value="2026-03-31T13:54:17+00:00"/>
  <publisher value="WHO"/>
  <contact>
    <name value="WHO"/>
    <telecom>
      <system value="url"/>
      <value value="http://who.int"/>
    </telecom>
  </contact>
  <description
               value="IMMZ.D18.S.Seasonal influenza schedule
Inactivated trivalent and quadrivalent vaccines, 2-dose schedule for children aged under 9 years"/>
  <relatedArtifact>
    <type value="citation"/>
    <citation
              value="WHO recommendations for routine immunization - summary tables (January 2025)"/>
  </relatedArtifact>
  <library
           value="http://smart.who.int/immunizations/Library/IMMZD18SSeasonalinfluenzaSeasonalInfluenzaLogic"/>
  <action>
    <title value="Seasonal influenza dose 1"/>
    <description
                 value="Provision of the seasonal influenza vaccine dose 1
Trigger event: Child's birth
Trigger pseudo: 
Trigger date: &quot;Date of birth&quot;
Create condition: Influenza vaccines are safe and effective in children from 6 months of age"/>
    <condition>
      <kind value="applicability"/>
      <expression>
        <description value="Seasonal influenza dose 1"/>
        <language value="text/cql-identifier"/>
        <expression value="Seasonal influenza dose 1"/>
      </expression>
    </condition>
    <definitionCanonical
                         value="http://smart.who.int/immunizations/ActivityDefinition/IMMZD2DTCR"/>
    <dynamicValue>
      <path value="status"/>
      <expression>
        <language value="text/cql-expression"/>
        <expression value="'active'"/>
      </expression>
    </dynamicValue>
    <dynamicValue>
      <path value="payload.contentString"/>
      <expression>
        <language value="text/cql-identifier"/>
        <expression value="Seasonal influenza dose 1 Create"/>
      </expression>
    </dynamicValue>
    <dynamicValue>
      <path value="category.coding"/>
      <expression>
        <description value="Category of communication"/>
        <language value="text/cql-expression"/>
        <expression
                    value="Code { system: 'http://terminology.hl7.org/CodeSystem/communication-category', code: 'alert' }"/>
      </expression>
    </dynamicValue>
    <dynamicValue>
      <path value="priority"/>
      <expression>
        <description value="Alert priority"/>
        <language value="text/cql-expression"/>
        <expression
                    value="Code { system: 'http://hl7.org/fhir/request-priority', code: 'routine' }"/>
      </expression>
    </dynamicValue>
  </action>
  <action>
    <title value="Seasonal influenza dose 2"/>
    <description
                 value="Provision of the seasonal influenza vaccine dose 2
Trigger event: First seasonal influenza dose from the primary series was administered and client is less than 9 years
Trigger pseudo: Count of vaccines administered (where &quot;Vaccine type&quot; = &quot;Seasonal influenza vaccines&quot; and &quot;Type of dose&quot; = &quot;Primary series&quot;) = 1 AND (Today's date − &quot;Date of birth&quot; &lt; 9 years)
Trigger date: &quot;Date and time of vaccination&quot; (where &quot;Vaccine type&quot; = &quot;Seasonal influenza vaccines&quot;)
Create condition: Children aged 6 months to 8 years should receive 2 doses at least 4 weeks apart"/>
    <condition>
      <kind value="applicability"/>
      <expression>
        <description value="Seasonal influenza dose 2"/>
        <language value="text/cql-identifier"/>
        <expression value="Seasonal influenza dose 2"/>
      </expression>
    </condition>
    <definitionCanonical
                         value="http://smart.who.int/immunizations/ActivityDefinition/IMMZD2DTCR"/>
    <dynamicValue>
      <path value="status"/>
      <expression>
        <language value="text/cql-expression"/>
        <expression value="'active'"/>
      </expression>
    </dynamicValue>
    <dynamicValue>
      <path value="payload.contentString"/>
      <expression>
        <language value="text/cql-identifier"/>
        <expression value="Seasonal influenza dose 2 Create"/>
      </expression>
    </dynamicValue>
    <dynamicValue>
      <path value="category.coding"/>
      <expression>
        <description value="Category of communication"/>
        <language value="text/cql-expression"/>
        <expression
                    value="Code { system: 'http://terminology.hl7.org/CodeSystem/communication-category', code: 'alert' }"/>
      </expression>
    </dynamicValue>
    <dynamicValue>
      <path value="priority"/>
      <expression>
        <description value="Alert priority"/>
        <language value="text/cql-expression"/>
        <expression
                    value="Code { system: 'http://hl7.org/fhir/request-priority', code: 'routine' }"/>
      </expression>
    </dynamicValue>
  </action>
  <action>
    <title value="Seasonal influenza annual dose"/>
    <description
                 value="Provision of the seasonal influenza vaccine annual dose
Trigger event: The primary series has been completed
Trigger pseudo: &quot;Completed the primary vaccination series&quot; = TRUE (where &quot;Vaccine type&quot; = &quot;Seasonal influenza vaccines&quot;)
Trigger date: Latest &quot;Date and time of vaccination&quot; (where &quot;Vaccine type&quot; = &quot;Seasonal influenza vaccines&quot;)
Create condition: Seasonal influenza vaccine annual dose should be provided 1 year after the previous dose"/>
    <condition>
      <kind value="applicability"/>
      <expression>
        <description value="Seasonal influenza annual dose"/>
        <language value="text/cql-identifier"/>
        <expression value="Seasonal influenza annual dose"/>
      </expression>
    </condition>
    <definitionCanonical
                         value="http://smart.who.int/immunizations/ActivityDefinition/IMMZD2DTCR"/>
    <dynamicValue>
      <path value="status"/>
      <expression>
        <language value="text/cql-expression"/>
        <expression value="'active'"/>
      </expression>
    </dynamicValue>
    <dynamicValue>
      <path value="payload.contentString"/>
      <expression>
        <language value="text/cql-identifier"/>
        <expression value="Seasonal influenza annual dose Create"/>
      </expression>
    </dynamicValue>
    <dynamicValue>
      <path value="category.coding"/>
      <expression>
        <description value="Category of communication"/>
        <language value="text/cql-expression"/>
        <expression
                    value="Code { system: 'http://terminology.hl7.org/CodeSystem/communication-category', code: 'alert' }"/>
      </expression>
    </dynamicValue>
    <dynamicValue>
      <path value="priority"/>
      <expression>
        <description value="Alert priority"/>
        <language value="text/cql-expression"/>
        <expression
                    value="Code { system: 'http://hl7.org/fhir/request-priority', code: 'routine' }"/>
      </expression>
    </dynamicValue>
  </action>
</PlanDefinition>