COVID-19: Data dictionary for the case report form

The following tables outline the definitions, format and values for each variable in the COVID-19 case report form.

Administration information
Variable Format/values Definition
PT
  • 10=NL
  • 11=PE
  • 12=NS
  • 13=NB
  • 24=QC
  • 35=ON
  • 46=MB
  • 47=SK
  • 48=AB
  • 59=BC
  • 60=YT
  • 61=NT
  • 62=NU
Province/territory where the case resides
PTCaseID - ID assigned by the PT
PHACReportedDate dd/mm/yyyy Date case was reported to PHAC.
Auto-generated field.
ReportedDate dd/mm/yyyy Date case was reported to PT
TestingReason Individual sought healthcare
Contact of a case
Routine respiratory disease Surveillance
Detected at point of entry
Notified of potential exposure (e.g. via COVID Alert app)
Other
The reason that the case was tested
TestingReasonSpec - -
Surveillance case classification
Variable Format/values Definition
Classification Confirmed
Probable
Surveillance classification of the reported case (according to the case definition)
Case details
Variable Format/values Definition
Residency Canadian resident
Non-Canadian resident
Indicates whether or not case's usual place of residence is Canada or another country.
ResidenceCountry - Indicates case's country of residency (if case's usual place of residence is not Canada)
Sex Male
Female
Intersex
Unknown
A set of biological attributes in humans and animals assigned at birth. It is primarily associated with physical and physiological features including chromosomes, gene expression, hormone levels and function, and reproductive/sexual anatomy.

Note: Collection of both sex and gender data may unintentionally out a person and/or may cause distress. Suggestion to add gender sensitivity training for interviewers for this particular piece, if feasible.
Gender Male
Female
Another gender
Unknown
Refers to the socially constructed roles, behaviours, expressions and identities of girls, women, boys, men, and gender diverse people.

Note: Collection of both sex and gender data may unintentionally out a person and/or may cause distress. Suggestion to add gender sensitivity training for interviewers for this particular piece, if feasible.
Age 0-130 (3 digits)
999 if unknown
Age of case at time of illness onset.
For cases <1 year, indicate age in months. For cases ≥ 1 year, indicate age in years.
AgeUnit Months
Years
For cases <1 year, indicate age in months in Age variable and select 'Months' for AgeUnit variable.
For cases ≥ 1year, indicate age in years in 'Age' variable and select 'Years' for AgeUnit variable.
HealthRegion - Indicates the case's health region
FSA - Forward Sortation Area - first three letters/digits of the postal code
DwellingType
  • Private dwelling (single family home)
  • Private dwelling (apartment)
  • Student residence
  • Rooming house/group home
  • Assisted living facility
  • Long-term care facility
  • Retirement residence
  • Correctional facility
  • Shelter/homeless
  • Other (specify)
  • Unknown
Indicates the type of dwelling the patient lived at the time of disease onset
Race
  • Black
  • East/Southeast Asian
  • Indigenous
  • Latino
  • Middle Eastern
  • South Asian
  • White
  • Other, specify
  • Unknown
  • Prefer not to answer
  • Not asked
Indicates the population group to which the case most closely identifies; multiple entries possible.

Examples that fall within response category:

  • Black - African, Afro-Caribbean, African Canadian descent
  • East/Southeast Asian - Chinese, Korean, Japanese, Taiwanese descent or Filipino, Vietnamese, Cambodian, Thai, Indonesian, other Southeast Asian descent
  • Indigenous - First Nations, Inuk/Inuit, Métis descent
  • Latino - Latin American, Hispanic descent
  • Middle Eastern - Arab, Persian, West Asian descent (e.g., Afghan, Egyptian, Iranian, Lebanese, Turkish, Kurdish)
  • South Asian - South Asian descent (e.g., East Indian, Pakistani, Bangladeshi, Sri Lankan, Indo-Caribbean)
  • White - European descent
RaceSpec - Specification for cases that don't meet current population group categories
IndigenousIdentity
  • First Nations
  • Métis (includes member of a Métis organization or Settlement)
  • Inuk/Inuit
  • Other indigenous, specify
  • Unknown
  • Prefer not to answer
  • Not asked
Indicates the case's Indigenous identity. Multiple entries possible.
IndigenousIdentitySpec - Specifies Other Indigenous
Residence_ReserveCommunityCrownLand
  • Yes
  • No
  • Unknown
  • Prefer not to answer
Indicates whether the case resides in a First Nations Community (on-reserve or Crown land) or Inuit Community
Occupation
Variable Format/values Definition
OccupationHCW
  • Yes
  • No
  • Unknown
  • Not asked
Is the case currently a health care worker? (Any role in a private or public health care setting, including employee, volunteer, student.)
OccupationHCWrole
  • Administrative services
  • Allied health professional (e.g., respiratory, occupational, physical, and other therapists, midwives, physician assistants, speech language pathologists, dietitians and nutritionists, social worker)
  • Dental professional
  • Emergency medical personnel
  • Laboratory worker
  • Nurse (RN, RPN, LPN, NP)
  • Physician
  • Pharmacist
  • Personal support/care worker or care aide
  • Student
  • Support services (e.g., cleaners, kitchen staff)
  • Volunteer
  • Unknown
  • Other, specify
If case is a healthcare worker, what is the healthcare occupation of the case
OccupationHCWroleSpec - Indicates the healthcare worker role
OccupationHCWpatientcare
  • Yes
  • No
  • Unknown
  • Not asked
If case is a healthcare worker, did the case provide direct patient care* in the 14 days prior to the date of symptom onset**?

*In-person patient care with or without the use of personal protective equipment
** If asymptomatic, refer to the date of collection of the positive lab specimen
Occupation
  • Animal worker (e.g. mink/rabbit farm, animal shelter, wildlife rehabilitation, zoo, veterinary clinic)
  • Correctional facility worker
  • farm worker
  • Industrial worker (e.g. mining, warehouse, construction)
  • Meat processing facility worker
  • office worker
  • Restaurant/bar worker
  • Retail worker (e.g. department store, discount store, grocery store, pharmacy, etc.)
  • Retired
  • School or daycare worker
  • Student
  • Unemployed
  • Unknown
  • Other, specify
Indicates the case's occupation if OccupationHCW = No/Unknown
OccupationSpec - Other, specify indicates the case's occupation
RotationalWorker
  • Yes
  • No
  • Unknown
  • Not asked
Indicates more details on the type of occupation

Is the case a rotational worker* (travel outside of the province/territory for work)?

* A worker whose shifts rotate or change according to a set schedule. This includes workers who work in remote or isolated regions at worksites that employ a fly-in-fly-out (FIFO) or drive-in-drive-out (DIDO) model (e.g., oil sands or mine workers).
TempForeignWorker
  • Yes
  • No
  • Unknown
  • Not asked
Indicates more details on the type of occupation

Is the case a temporary foreign worker*?
* Individuals who are neither a Canadian citizen nor a permanent resident who work in Canada.
Symptoms
Variable Format/values Definition
OnsetDate dd/mm/yyyy Date of symptom onset
Asymptomatic Yes
No
Indicates if the case was asymptomatic at time of report
Pre-existing conditions and risk factors
Variable Format/values Definition
RFHypertension
  • Yes
  • No
  • Unknown
  • Not asked
Indicates if case has hypertension (i.e., high blood pressure)
RFCardiovascularDisease
  • Yes
  • No
  • Unknown
  • Not asked
Indicates if case has cardiacvascular disease (e.g., coronary heart disease, congenital heart disease)
RFDiabetes
  • Yes
  • No
  • Unknown
  • Not asked
Indicates if case has diabetes
RFChronicKidneyDisease
  • Yes
  • No
  • Unknown
  • Not asked
Indicates if case has chronic kidney disease
RFCOPD
  • Yes
  • No
  • Unknown
  • Not asked
Indicates if case has chronic obstructive pulmonary disease (COPD)
RFAsthma
  • Yes
  • No
  • Unknown
  • Not asked
Indicates if case has asthma
RFLiverDisease
  • Yes
  • No
  • Unknown
  • Not asked
Indicates if case has a liver disease (e.g., non-alcoholic fatty liver disease, alcoholic liver disease, chronic viral hepatitis, cirrhosis)
RFMalignancy
  • Yes
  • No
  • Unknown
  • Not asked
Indicates if case has a malignancy (cancer)
RFSickleCellDisease
  • Yes
  • No
  • Unknown
  • Not asked
Indicates if case has sickle cell disease
RFImmunodef
  • Yes
  • No
  • Unknown
  • Not asked
Indicates if case has an immunodeficiency disease/condition
RFNeuroDisorder
  • Yes
  • No
  • Unknown
  • Not asked
Case has a chronic neurological or neuromuscular disorder (e.g., dementia)
RFCerebrovascularDisease
  • Yes
  • No
  • Unknown
  • Not asked
Indicates if the case has cerebrovascular disease (e.g., stroke)
RFPregnancy
  • Yes
  • No
  • Unknown
  • Not asked
Indicates if case is pregnant
RFPregTrimester
  • 1
  • 2
  • 3
  • Unknown
  • Not asked
If case in pregnant, specify trimester
RFPostPartum
  • Yes
  • No
  • Unknown
  • Not asked
Indicates if case is in post-partum (≤6 weeks)
RFObesity
  • Yes
  • No
  • Unknown
  • Not asked
Indicates if case has BMI≥30, classified under obesity or severe obesity
RFSmokingTobacco Current
Former
Never
Unknown
Not asked
Indicates tobacco smoking status
RFVaping
  • Yes
  • No
  • Unknown
  • Not asked
Indicates if in the past 30 days, the case used a vaping device.
RFProblematicSubstanceUse
  • Yes
  • No
  • Unknown
  • Not asked
Indicates if case reports problematic substance use (alcohol, injection drug, opioid use).

Problematic opioid use defined as the use of non-pharmaceutical opioids (e.g. heroin and carfentanil), use of pharmaceutical opioids not prescribed to the person or problematic use of prescribed opioids.
RFOther
  • Yes
  • No
  • Unknown
  • Not asked
Indicates if the case has an unlisted pre-existing condition
RFOtherSpec - If case has an unlisted pre-existing condition, specify disease (if applicable)
Clinical course and outcomes
Variable Format/values Definition
Hosp
  • Yes
  • No
  • Unknown
Indicates if the case was admitted to the hospital as a result of their illness (does not include ER visits):
ICU
  • Yes
  • No
  • Unknown
If hospitalized, was the case admitted to intensive care unit (ICU):
Deceased
  • Yes
  • No
  • Unknown
Indicates if case is deceased.
DeathCovid
  • Yes
  • No
  • Unknown
If the case has died, indicates if COVID-19 was the cause of death or a contributing factor COVID-19 Deceased case definition: A probable or confirmed COVID-19 case whose death results from a clinically compatible illness, unless there is a clear alternative cause of death identified (e.g., trauma, poisoning, drug overdose).

A Medical Officer of Health, relevant public health authority, or coroner may use their discretion when determining if a death was due to COVID-19, and their judgement will supersede the above criteria.

A death due to COVID-19 may be attributed when COVID-19 is the cause of death or is a contributing factor.
DeathCause - If the case has died, indicates the cause of death (as listed on the death certificate)
DeathDate dd/mm/yyyy Case's date of death (if applicable)
Disposition Resolved
Not yet resolved
Unknown
Indicates the case's current state (if not deceased) Resolved case definition: A case is considered resolved when:
1. Fever has resolved without the use of fever reducing medication, and other symptoms have improved¥
and
  • If the case is not immunocompromised and does not have severe illness, at least 10 days have passed since symptom onset, or if asymptomatic, the episode date.
or
  • If the case is immunocompromised or has severe illness (e.g., admitted to hospital due to COVID-19), a minimum of 20 days have passed since symptom onset.
or
2. Two consecutive validated laboratory-based NAAT tests for SARS-CoV-2 have been collected at least 24 hours apart and both have returned negative.

¥If symptom data are unavailable or the case is asymptomatic this criteria may be bypassed.
ResolutionDate dd/mm/yyyy Date reported resolved case
Exposures
Variable Format/values Definition
Travel_Domestic
  • Yes
  • No
  • Not asked
  • Unknown
In the 14 days prior to symptom onset*, did the case travel to/from another province/territory within Canada (including layovers/in transit)?

*if asymptomatic, refer to date of collection of the positive lab specimen
Travel_Domestic_Loc
  • 10=NL
  • 11=PE
  • 12=NS
  • 13=NB
  • 24=QC
  • 35=ON
  • 46=MB
  • 47=SK
  • 48=AB
  • 59=BC
  • 60=YT
  • 61=NT
  • 62=NU
If yes, specify the province/territory travelled to/from (check all that apply, including layovers/in transit):
Travel_International
  • Yes
  • No
  • Not asked
  • Unknown
In the 14 days prior to symptom onset, did the case travel outside of Canada?
Travel_International_Loc - If yes, specify the country or countries travelled to (including layovers/ in transit):

Country level for international travel
CloseContactCase
  • Yes
  • No
  • Unknown
Was the case in close contact** with a confirmed or probable case in the 14 days prior to their symptom onset*?

* If asymptomatic, refer to date of collection of the positive lab specimen
** Close contact is defined as a person who provided care for the patient, including healthcare workers, family members or other caregivers, or who had other similar close physical contact or who lived with or otherwise had close prolonged contact with a probable or confirmed case while the case was ill.
CloseContactTravel Yes - close contact with a person domestic travel
Yes - close contact with a person international travel
No close contact with anyone who has travelled
Unknown
In the 14 days prior to symptom onset*, was the case in close contact with a person who has travelled in the previous 14 days?

*if asymptomatic, refer to date of collection of the positive lab specimen
CloseContactTravelSpec - Please specify where close contact travelled
Cluster
  • Yes
  • No
  • Unknown
In the 14 days prior to symptom onset, was this client exposed to a known cluster or outbreak (e.g. communal setting with cases, community cluster.)?
Note: this includes clusters that are not considered reportable outbreaks.

Definitions
COVID-19 outbreak:
Two or more confirmed cases of COVID-19 epidemiologically linked to a specific setting and/or location. Excluding households, since household cases may not be declared or managed as an outbreak if the risk of transmission is contained. This definition also excludes cases that are geographically clustered (e.g., in a region, city, or town) but not epidemiologically linked, and cases attributed to community transmission.

COVID-19 cluster:

Two or more confirmed cases aggregated in time and by setting and/or location, without an epidemiological link (e.g., common exposure or transmission event), or until an epidemiological link is established. Aggregated in time means that the cases' symptom onset or if asymptomatic, the date that the diagnostic laboratory sample was collected, occurred within 14 to 28 days (i.e., one to two maximum incubation periods). The identification of a cluster considers the setting/location type and level of community transmission, and is at the discretion of the investigating health authority.
OutbreakID - ID assigned by the PT to associated outbreak

Definitions
COVID-19 outbreak:
Two or more confirmed cases of COVID-19 epidemiologically linked to a specific setting and/or location. Excluding households, since household cases may not be declared or managed as an outbreak if the risk of transmission is contained. This definition also excludes cases that are geographically clustered (e.g., in a region, city, or town) but not epidemiologically linked, and cases attributed to community transmission.
NumberofContacts - Total number of contacts identified for this case
ExposureSetting
  • Agri-food processing facility (agri-food includes from primary agriculture and aquaculture to food, seafood and beverage processing)
  • Community healthcare setting (e.g., private clinics, support centres for people living with disabilities, etc.)
  • Congregate living setting (e.g. shelter, group homes, university dormitories, etc.)
  • Correctional facility
  • daycare or day camp
  • emergency services (e.g. paramedic, fire, police services)
  • Acute care setting (e.g. hospital, urgent care, emergency room)
  • Household
  • industrial setting (e.g., warehouse, mining etc.)
  • Long-term care facility
  • retirement residence
  • mass gathering event (i.e. conference, sporting event, etc.)
  • Office
  • personal care (e.g., spa, barber, hair salon, etc.)
  • Recreational facility (e.g., gym, fitness, museum, gallery, community centre, etc.)
  • Restaurant/bar
  • Retail
  • School
  • Social event (e.g. house party, family events, etc.)
  • Transportation (e.g., municipal transport system, taxi, etc.)
  • Travel tourism (e.g., flight, hotel, short-term rental, cruise, etc.)
  • Unknown source
  • Other, specify
Indicate exposure setting(s) where the case may have been exposed and acquired infection (Check all that apply)

Exposure setting based on local public health assessment (consider risk, likelihood of transmission, time spent at location, activity at that location, etc.)
ExposureSetting_OtherSpec - Specifies other exposure setting
ExposureSettingType
  • Community
  • Personal residence
  • Other residence
  • Workplace
  • Unknown
  • Other, specify
Indicates more details on the type of exposure setting, where case was likely exposed and acquired infection.

Examples:
If exposure setting is a school, and the case works as a teacher, select workplace for exposure setting type. If the case is a student, then select community for exposure setting.

If exposure setting is a long term care facility, and the case lives there, then select other residence for exposure setting. If the case is a nurse who works at the long term care facility, then select workplace for exposure setting.
ExposureSettingType_OtherSpec - Specified other exposure setting type
Laboratory information
Variable Format/values Definition
LabSpecimenCollectionDate dd/mm/yyyy Date(s) the case's lab specimen was collected
LabTestMethod Laboratory-based NAAT
Serology
POC NAAT POC antigen test
Other
Indicates the type of test used for case identification
Sequencing
  • Yes
  • No
  • Unknown
Has sequencing been completed?
LabTestResultDate dd/mm/yyyy Indicates the date the lab's test result was available.
LabID Free-text Provincial/Territorial Laboratory ID for case's specimen, (which is included in national laboratory reporting for COVID-19)
Lab_name Texte libre Name of lab providing the LabID for national laboratory reporting
VariantIdentified
  • Yes
  • No
  • Unknown
Has a variant of concern, variant of interest or other mutation of interest been identified?
VariantScreenResult Free-text The result of the VOC screening assay (e.g N501Y mutation, E484K mutation, etc)
VariantSequenceResult Free-text The name of the identified VOC/VUI (e.g. B.1.1.7, B.1.351, P.1, B.1.525 etc). Pango lineage should be provided where appropriate.
Vaccination information
Variable Format/values Definition
VaccineHistory
  • Yes
  • No
  • Unknown
Did the case received vaccination for COVID-19?
VaccinesReceived
  • Pfizer/BioNTech
  • Moderna
  • AstraZeneca
  • COVISHIELD
  • Janssen
  • Other
  • Unknown
Indicate vaccine(s) received (Check all that apply)
VaccineOther - If vaccine received listed as other, specify which vaccine (if applicable)
Pfizer_Doses
  • 1
  • 2
  • 3
Number of doses administered for the Pfizer/BioNTech COVID-19 vaccine
Moderna_Doses
  • 1
  • 2
  • 3
Number of doses administered for the COVID-19 vaccine Moderna
AstraZeneca_Doses
  • 1
  • 2
  • 3
Number of doses administered for the Astra Zeneca COVID-19 vaccine
COVISHIELD_Doses
  • 1
  • 2
  • 3
Number of doses administered for the COVISHIELD vaccine
Janssen_Doses
  • 1
  • 2
  • 3
Number of doses administered for the Janssen COVID-19 vaccine
OtherVaccine_Doses
  • 1
  • 2
  • 3
Number of doses administered for vaccine listed as Other (if applicable)
UKNVaccine_Doses
  • 1
  • 2
  • 3
Number of doses administered for vaccine listed as Unknown (if applicable)
Pfizer_Date1 dd/mm/yyyy Date of first dose administered for the Pfizer/BioNTech COVID-19 vaccine (dd/mm/yyyy)
Pfizer_Date2 dd/mm/yyyy Date of second dose administered for the Pfizer/BioNTech COVID-19 vaccine (dd/mm/yyyy)
Pfizer_Date3 dd/mm/yyyy Date of subsequent dose administered for the Pfizer/BioNTech COVID-19 vaccine (dd/mm/yyyy)
Moderna_Date1 dd/mm/yyyy Date of first dose administered for the COVID-19 vaccine Moderna (dd/mm/yyyy)
Moderna_Date2 dd/mm/yyyy Date of second dose administered for the COVID-19 vaccine Moderna (dd/mm/yyyy)
Moderna_Date3 dd/mm/yyyy Date of subsequent dose administered for the COVID-19 vaccine Moderna (dd/mm/yyyy)
AstraZeneca_Date1 dd/mm/yyyy Date of first dose administered for the Astra Zeneca COVID-19 vaccine (dd/mm/yyyy)
AstraZeneca_Date2 dd/mm/yyyy Date of second dose administered for the Astra Zeneca COVID-19 vaccine (dd/mm/yyyy)
AstraZeneca_Date3 dd/mm/yyyy Date of subsequent dose administered for the Astra Zeneca COVID-19 vaccine (dd/mm/yyyy)
COVISHIELD_Date1 dd/mm/yyyy Date of first dose administered for the COVISHIELD vaccine (dd/mm/yyyy)
COVISHIELD_Date2 dd/mm/yyyy Date of second dose administered for the COVISHIELD vaccine (dd/mm/yyyy)
COVISHIELD_Date3 dd/mm/yyyy Date of subsequent dose administered for the COVISHIELD vaccine (dd/mm/yyyy)
Janssen_Date1 dd/mm/yyyy Date of first dose administered for the Janssen COVID-19 vaccine (dd/mm/yyyy)
Janssen_Date2 dd/mm/yyyy Date of second dose administered for the Janssen COVID-19 vaccine (dd/mm/yyyy)
Janssen_Date3 dd/mm/yyyy Date of subsequent dose administered for the Janssen COVID-19 vaccine (dd/mm/yyyy)
OtherVaccine_Date1 dd/mm/yyyy Date of first dose administered for the vaccine listed as Other (dd/mm/yyyy)
OtherVaccine_Date2 dd/mm/yyyy Date of second dose administered for the vaccine listed as Other (dd/mm/yyyy)
OtherVaccine_Date3 dd/mm/yyyy Date of subsequent dose administered for the vaccine listed as Other (dd/mm/yyyy)
UKNVaccine_Date1 dd/mm/yyyy Date of first dose administered for the vaccine listed as Unknown (dd/mm/yyyy)
UKNVaccine_Date2 dd/mm/yyyy Date of second dose administered for the vaccine listed as Unknown (dd/mm/yyyy)
UKNVaccine_Date3 dd/mm/yyyy Date of subsequent dose administered for the vaccine listed as Unknown (dd/mm/yyyy)
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