DDCC Core Data Set Logical Model - Vaccination Status - Proof of Vaccination - Definitions - WHO Digital Documentation of COVID-19 Certificates (DDCC) v1.0.1

This page is part of the WHO Digital Documentation of COVID-19 Certificates (DDCC) (v1.0.1: releases Draft) based on FHIR (HL7® FHIR® Standard) R4. This is the current published version. For a full list of available versions, see the Directory of published versions

Logical Model: DDCCCoreDataSetVSPoV - Detailed Descriptions

Draft as of 2024-12-18

Definitions for the DDCCCoreDataSetVSPoV logical model.

Guidance on how to interpret the contents of this table can be found here

0. DDCCCoreDataSet
Definition	Data elements for the DDCC Core Data Set - Vaccination Status - Proof of Vaccination.
Short	DDCC Core Data Set Logical Model - Vaccination Status - Proof of Vaccination
Logical Model	Instances of this logical model are not marked to be the target of a Reference

Guidance on how to interpret the contents of this table can be found here

0. DDCCCoreDataSet
Definition	Data elements for the DDCC Core Data Set - Vaccination Status - Proof of Vaccination.
Short	DDCC Core Data Set Logical Model - Vaccination Status - Proof of Vaccination
Control	0..*
Is Modifier	false
Logical Model	Instances of this logical model are not marked to be the target of a Reference
2. DDCCCoreDataSet.name
Definition	The full name of the person.
Short	Name
Control	1..1
Type	string
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	true
4. DDCCCoreDataSet.birthDate
Definition	The person's date of birth (DOB) if known. If unknown, use given DOB for administrative purposes
Short	Date of birth
Control	0..1
Type	date
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	true
6. DDCCCoreDataSet.identifier
Definition	Unique identifier for the person, according to the policies applicable to each country. There can be more than one unique identifier used to link records. (e.g. national ID, health ID, immunization information system ID, medical record ID).
Short	Unique identifier
Note	This is a business identifier, not a resource identifier (see discussion)
Control	0..1
Type	Identifier
Summary	true
8. DDCCCoreDataSet.certificate
Definition	Metadata associated with the certificate
Short	Certificate Metadata
Control	0..1
Type	BackboneElement
Summary	true
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
10. DDCCCoreDataSet.certificate.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
12. DDCCCoreDataSet.certificate.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
Slicing	This element introduces a set of slices on `DDCCCoreDataSet.certificate.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
14. DDCCCoreDataSet.certificate.modifierExtension
Definition	May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Short	Extensions that cannot be ignored even if unrecognized
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary	true
Requirements	Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names	extensions, user content, modifiers
Invariants	ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
16. DDCCCoreDataSet.certificate.issuer
Definition	Certificate issuer.
Short	Certificate issuer
Control	1..1
Type	Reference(DDCC Organization)
Summary	true
18. DDCCCoreDataSet.certificate.kid
Definition	Key ID
Short	Key ID used to verify the signature of the certificate
Control	0..1
Type	string
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
20. DDCCCoreDataSet.certificate.hcid
Definition	Health certificate identifier (HCID).
Short	Health certificate identifier (HCID)
Control	1..1
Type	Identifier
Summary	true
22. DDCCCoreDataSet.certificate.ddccid
Definition	DDCC Identifier
Short	DDCC Identifier
Control	0..1
Type	Identifier
Summary	true
24. DDCCCoreDataSet.certificate.version
Definition	Certificate schema version
Short	Certificate schema version
Note	This is a business version Id, not a resource version Id (see discussion)
Control	1..1
Type	string
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	true
26. DDCCCoreDataSet.certificate.period
Definition	Certificate validity period.
Short	Certificate Validity Period
Control	0..1
Type	Period
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) per-1: If present, start SHALL have a lower value than end (`start.hasValue().not() or end.hasValue().not() or (start <= end)`)
28. DDCCCoreDataSet.certificate.period.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
30. DDCCCoreDataSet.certificate.period.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
Slicing	This element introduces a set of slices on `DDCCCoreDataSet.certificate.period.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
32. DDCCCoreDataSet.certificate.period.start
Definition	Start date of certificate validity. The start of the period. The boundary is inclusive.
Short	Certificate valid fromStarting time with inclusive boundary
Comments	If the low element is missing, the meaning is that the low boundary is not known.
Control	0..1 This element is affected by the following invariants: per-1
Type	dateTime
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	true
Invariants	ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
34. DDCCCoreDataSet.certificate.period.end
Definition	End date of certificate validity. The end of the period. If the end of the period is missing, it means no end was known or planned at the time the instance was created. The start may be in the past, and the end date in the future, which means that period is expected/planned to end at that time.
Short	Certificate valid untilEnd time with inclusive boundary, if not ongoing
Comments	The high value includes any matching date/time. i.e. 2012-02-03T10:00:00 is in a period that has an end value of 2012-02-03.
Control	0..1 This element is affected by the following invariants: per-1
Type	dateTime
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	true
Meaning if Missing	If the end of the period is missing, it means that the period is ongoing
Invariants	ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
36. DDCCCoreDataSet.vaccination
Definition	A vaccination event.
Short	Vaccination Event
Control	1..1
Type	BackboneElement
Summary	true
Invariants	who-ddcc-data-1: Manufacturer or Market Authorization Holder SHALL be present (`manufacturer.exists() or maholder.exists()`) ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
38. DDCCCoreDataSet.vaccination.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
40. DDCCCoreDataSet.vaccination.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
Slicing	This element introduces a set of slices on `DDCCCoreDataSet.vaccination.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
42. DDCCCoreDataSet.vaccination.modifierExtension
Definition	May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Short	Extensions that cannot be ignored even if unrecognized
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary	true
Requirements	Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names	extensions, user content, modifiers
Invariants	ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
44. DDCCCoreDataSet.vaccination.vaccine
Definition	Generic description of the vaccine or vaccine sub-type. e.g. COVID-19 mRNA vaccine, HPV vaccine.
Short	Vaccine or prophylaxis
Control	1..1
Binding	The codes SHOULD be taken from WHO Vaccine List (COVID-19) (preferred to `http://smart.who.int/ddcc/ValueSet/WHODDCCVaccinesCOVID19`)
Type	Coding
Summary	true
46. DDCCCoreDataSet.vaccination.brand
Definition	The brand or trade name used to refer to the vaccine received.
Short	Vaccine brand
Control	1..1
Type	Coding
Summary	true
48. DDCCCoreDataSet.vaccination.manufacturer
Definition	Name of the manufacturer of the vaccine received. e.g. Serum institute of India, AstraZeneca. If vaccine manufacturer is unknown, market authorization holder is REQUIRED.
Short	Vaccine manufacturer
Control	0..1
Type	Coding
Summary	true
50. DDCCCoreDataSet.vaccination.maholder
Definition	Name of the market authorization holder of the vaccine received. If market authorization holder is unknown, vaccine manufacturer is REQUIRED.
Short	Vaccine market authorization holder
Control	0..1
Type	Coding
Summary	true
52. DDCCCoreDataSet.vaccination.lot
Definition	Lot number or batch number of vaccination.
Short	Vaccine lot number
Control	1..1
Type	string
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	true
54. DDCCCoreDataSet.vaccination.date
Definition	Date in which the vaccine was provided.
Short	Date of vaccination
Control	1..1
Type	dateTime
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	true
56. DDCCCoreDataSet.vaccination.validFrom
Definition	Date upon which provided vaccination is considered valid.
Short	Vaccination valid from
Control	0..1
Type	date
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
58. DDCCCoreDataSet.vaccination.dose
Definition	Vaccine dose number.
Short	Dose number
Control	1..1
Type	positiveInt
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	true
60. DDCCCoreDataSet.vaccination.totalDoses
Definition	Total expected doses as defined by Member State care plan and immunization programme policies.
Short	Total doses
Control	0..1
Type	positiveInt
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
62. DDCCCoreDataSet.vaccination.country
Definition	The country in which the individual has been vaccinated.
Short	Country of vaccination
Control	1..1
Binding	The codes SHOULD be taken from Iso3166-1-3 (preferred to `http://hl7.org/fhir/ValueSet/iso3166-1-3`)
Type	Coding
Summary	true
64. DDCCCoreDataSet.vaccination.centre
Definition	The name or identifier of the vaccination facility responsible for providing the vaccination.
Short	Administering centre
Control	0..1
Type	string
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
66. DDCCCoreDataSet.vaccination.signature
Definition	REQUIRED for PAPER vaccination certificates ONLY. The health worker who provided the vaccination or the supervising clinician's hand-written signature.
Short	Signature of health worker
Control	0..1
Type	Signature
68. DDCCCoreDataSet.vaccination.practitioner
Definition	OPTIONAL for DIGITAL and PAPER vaccination certificates. The unique identifier for the health worker as determined by the member state. There can be more than one unique identifier used. (e.g. system generated ID, health profession number, cryptographic signature, or any other form of health worker unique identifier). This can be used in lieu of a paper-based signature.
Short	Health worker identifier
Control	0..1
Type	Identifier
70. DDCCCoreDataSet.vaccination.disease
Definition	Name of disease vaccinated against (such as COVID-19).
Short	Disease or agent targeted
Control	0..1
Binding	The codes SHOULD be taken from WHO Disease or Agent Targeted (COVID-19) (preferred to `http://smart.who.int/ddcc/ValueSet/WHODDCCDiseaseTargetedCOVID19`)
Type	Coding
72. DDCCCoreDataSet.vaccination.nextDose
Definition	Date on which the next vaccination should be administered, if a next dose is REQUIRED.
Short	Due date of next dose
Control	0..1
Type	date
Primitive Value	This primitive element may be present, or absent, or replaced by an extension

Guidance on how to interpret the contents of this table can be found here

0. DDCCCoreDataSet
Definition	Data elements for the DDCC Core Data Set - Vaccination Status - Proof of Vaccination.
Short	DDCC Core Data Set Logical Model - Vaccination Status - Proof of Vaccination
Control	0..*
Is Modifier	false
Logical Model	Instances of this logical model are not marked to be the target of a Reference
2. DDCCCoreDataSet.name
Definition	The full name of the person.
Short	Name
Control	1..1
Type	string
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	true
4. DDCCCoreDataSet.birthDate
Definition	The person's date of birth (DOB) if known. If unknown, use given DOB for administrative purposes
Short	Date of birth
Control	0..1
Type	date
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	true
6. DDCCCoreDataSet.identifier
Definition	Unique identifier for the person, according to the policies applicable to each country. There can be more than one unique identifier used to link records. (e.g. national ID, health ID, immunization information system ID, medical record ID).
Short	Unique identifier
Note	This is a business identifier, not a resource identifier (see discussion)
Control	0..1
Type	Identifier
Summary	true
8. DDCCCoreDataSet.certificate
Definition	Metadata associated with the certificate
Short	Certificate Metadata
Control	0..1
Type	BackboneElement
Summary	true
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
10. DDCCCoreDataSet.certificate.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
12. DDCCCoreDataSet.certificate.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `DDCCCoreDataSet.certificate.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
14. DDCCCoreDataSet.certificate.modifierExtension
Definition	May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Short	Extensions that cannot be ignored even if unrecognized
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary	true
Requirements	Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names	extensions, user content, modifiers
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
16. DDCCCoreDataSet.certificate.issuer
Definition	Certificate issuer.
Short	Certificate issuer
Control	1..1
Type	Reference(DDCC Organization)
Summary	true
18. DDCCCoreDataSet.certificate.kid
Definition	Key ID
Short	Key ID used to verify the signature of the certificate
Control	0..1
Type	string
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
20. DDCCCoreDataSet.certificate.hcid
Definition	Health certificate identifier (HCID).
Short	Health certificate identifier (HCID)
Control	1..1
Type	Identifier
Summary	true
22. DDCCCoreDataSet.certificate.ddccid
Definition	DDCC Identifier
Short	DDCC Identifier
Control	0..1
Type	Identifier
Summary	true
24. DDCCCoreDataSet.certificate.version
Definition	Certificate schema version
Short	Certificate schema version
Note	This is a business version Id, not a resource version Id (see discussion)
Control	1..1
Type	string
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	true
26. DDCCCoreDataSet.certificate.period
Definition	Certificate validity period.
Short	Certificate Validity Period
Control	0..1
Type	Period
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) per-1: If present, start SHALL have a lower value than end (`start.hasValue().not() or end.hasValue().not() or (start <= end)`)
28. DDCCCoreDataSet.certificate.period.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
30. DDCCCoreDataSet.certificate.period.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `DDCCCoreDataSet.certificate.period.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
32. DDCCCoreDataSet.certificate.period.start
Definition	Start date of certificate validity.
Short	Certificate valid from
Comments	If the low element is missing, the meaning is that the low boundary is not known.
Control	0..1 This element is affected by the following invariants: per-1
Type	dateTime
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	true
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
34. DDCCCoreDataSet.certificate.period.end
Definition	End date of certificate validity.
Short	Certificate valid until
Comments	The high value includes any matching date/time. i.e. 2012-02-03T10:00:00 is in a period that has an end value of 2012-02-03.
Control	0..1 This element is affected by the following invariants: per-1
Type	dateTime
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	true
Meaning if Missing	If the end of the period is missing, it means that the period is ongoing
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
36. DDCCCoreDataSet.vaccination
Definition	A vaccination event.
Short	Vaccination Event
Control	1..1
Type	BackboneElement
Summary	true
Invariants	who-ddcc-data-1: Manufacturer or Market Authorization Holder SHALL be present (`manufacturer.exists() or maholder.exists()`) ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
38. DDCCCoreDataSet.vaccination.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
40. DDCCCoreDataSet.vaccination.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `DDCCCoreDataSet.vaccination.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
42. DDCCCoreDataSet.vaccination.modifierExtension
Definition	May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Short	Extensions that cannot be ignored even if unrecognized
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary	true
Requirements	Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names	extensions, user content, modifiers
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
44. DDCCCoreDataSet.vaccination.vaccine
Definition	Generic description of the vaccine or vaccine sub-type. e.g. COVID-19 mRNA vaccine, HPV vaccine.
Short	Vaccine or prophylaxis
Control	1..1
Binding	The codes SHOULD be taken from WHO Vaccine List (COVID-19) (preferred to `http://smart.who.int/ddcc/ValueSet/WHODDCCVaccinesCOVID19`)
Type	Coding
Summary	true
46. DDCCCoreDataSet.vaccination.brand
Definition	The brand or trade name used to refer to the vaccine received.
Short	Vaccine brand
Control	1..1
Type	Coding
Summary	true
48. DDCCCoreDataSet.vaccination.manufacturer
Definition	Name of the manufacturer of the vaccine received. e.g. Serum institute of India, AstraZeneca. If vaccine manufacturer is unknown, market authorization holder is REQUIRED.
Short	Vaccine manufacturer
Control	0..1
Type	Coding
Summary	true
50. DDCCCoreDataSet.vaccination.maholder
Definition	Name of the market authorization holder of the vaccine received. If market authorization holder is unknown, vaccine manufacturer is REQUIRED.
Short	Vaccine market authorization holder
Control	0..1
Type	Coding
Summary	true
52. DDCCCoreDataSet.vaccination.lot
Definition	Lot number or batch number of vaccination.
Short	Vaccine lot number
Control	1..1
Type	string
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	true
54. DDCCCoreDataSet.vaccination.date
Definition	Date in which the vaccine was provided.
Short	Date of vaccination
Control	1..1
Type	dateTime
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	true
56. DDCCCoreDataSet.vaccination.validFrom
Definition	Date upon which provided vaccination is considered valid.
Short	Vaccination valid from
Control	0..1
Type	date
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
58. DDCCCoreDataSet.vaccination.dose
Definition	Vaccine dose number.
Short	Dose number
Control	1..1
Type	positiveInt
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	true
60. DDCCCoreDataSet.vaccination.totalDoses
Definition	Total expected doses as defined by Member State care plan and immunization programme policies.
Short	Total doses
Control	0..1
Type	positiveInt
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
62. DDCCCoreDataSet.vaccination.country
Definition	The country in which the individual has been vaccinated.
Short	Country of vaccination
Control	1..1
Binding	The codes SHOULD be taken from Iso3166-1-3 (preferred to `http://hl7.org/fhir/ValueSet/iso3166-1-3`)
Type	Coding
Summary	true
64. DDCCCoreDataSet.vaccination.centre
Definition	The name or identifier of the vaccination facility responsible for providing the vaccination.
Short	Administering centre
Control	0..1
Type	string
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
66. DDCCCoreDataSet.vaccination.signature
Definition	REQUIRED for PAPER vaccination certificates ONLY. The health worker who provided the vaccination or the supervising clinician's hand-written signature.
Short	Signature of health worker
Control	0..1
Type	Signature
68. DDCCCoreDataSet.vaccination.practitioner
Definition	OPTIONAL for DIGITAL and PAPER vaccination certificates. The unique identifier for the health worker as determined by the member state. There can be more than one unique identifier used. (e.g. system generated ID, health profession number, cryptographic signature, or any other form of health worker unique identifier). This can be used in lieu of a paper-based signature.
Short	Health worker identifier
Control	0..1
Type	Identifier
70. DDCCCoreDataSet.vaccination.disease
Definition	Name of disease vaccinated against (such as COVID-19).
Short	Disease or agent targeted
Control	0..1
Binding	The codes SHOULD be taken from WHO Disease or Agent Targeted (COVID-19) (preferred to `http://smart.who.int/ddcc/ValueSet/WHODDCCDiseaseTargetedCOVID19`)
Type	Coding
72. DDCCCoreDataSet.vaccination.nextDose
Definition	Date on which the next vaccination should be administered, if a next dose is REQUIRED.
Short	Due date of next dose
Control	0..1
Type	date
Primitive Value	This primitive element may be present, or absent, or replaced by an extension