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CHILD Cohort Study COVID-19 Add-On Study
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CHILD Cohort Study COVID-19 Add-On Study

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Datasets -
Variables -
Start Year
2020
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Investigators Contacts
  • Dr. Piush Mandhane
    University of Alberta
  • Dr. Stuart Turvey
    BC Children's Hospital
  • Dr. Elinor Simons
    University of Manitoba
  • Dr. Fiona Brinkman
    Simon Fraser University
  • Dr. Wendy Lou
    University of Toronto
  • Dr. David Patrick
    BC Center for Disease Control
  • Dr. Erica Di Ruggiero
    University of Toronto
  • Dr. Nelly Amenyogbe
    Telethon Kids Institute
  • Dr. Jeff Brook
    Universit of Toronto
  • Dr. William Hsiao
    Simon Fraser University
  • Dr. Jean-Philippe Julien
    The Hospital for Sick Children (SickKids)
  • Dr. Tobias Kollmann
    BC Children's Hospital
  • Dr. Terrie Moffitt
    Duke University

Design

Study design
Cohort
Follow Up
Participants were asked to complete biweekly symptom surveys and four quarterly surveys between January 2021 and March 2022. Two phases of in-home self-administered biosample collections occurred in the spring and fall of 2021.

Recruitment

Recruitment Target
  • Families

Number of Participants

Number of Participants
5,378
Number of Participants with Biological Samples
Supplementary Information

5378 participants enrolled from 1462 households:

1431 Mothers
1015 Fathers
2826 Children (0-19 years)
110 Others adults (>19 years of age)

Access

Availability of data and biosamples

Possible Access to Data
Possible Access to Biosamples
Other
Yes
No
Not applicable
Don't know

Timeline

Populations

Selection Criteria
Newborns
Twins
Countries
  • Canada
Territory
Ethnic Origin
Health Status
Other Criteria
Exclusion: Participants residing outside of Canada

Recruitment

Sources of recruitment
  • General population
  • Participants from existing studies
General Population
  • Volunteer enrolment
Supplementary Information
CHILD participants and anyone else living within the same household were invited to participate.
Participants from Existing Studies
  • CHILD Cohort Study

Number of Participants

Number of Participants
2,726
Number of Participants with Biological Samples
2,726
Data Collection Events
# Name Description Start End
0 CHILD-COV19 - Children - Baseline Demographic data was collected, as well information about symptoms and impacts of COVID-19, how the pandemic has changed daily lives, and thoughts and worries about the virus, COVID-19 exposure, ... 2021-01 2021-06
1 CHILD-COV19 - Children - Biweekly screening Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-01 2021-01
2 CHILD-COV19 - Children - Biweekly screening 2 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-01 2021-01
3 CHILD-COV19 - Children - Biweekly screening 3 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-02 2021-02
4 CHILD-COV19 - Children - Biweekly screening 4 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-02 2021-02
5 CHILD-COV19 - Children - Biweekly screening 5 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-03 2021-03
6 CHILD-COV19 - Children - Phase A Sample Collection A dried blood spot card and VAMS (volumetric absorptive microsampling) blood sample, a stool swab, and a saliva sample, were collected. 2021-03 2021-09
7 CHILD-COV19 - Children - Biweekly screening 6 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-03 2021-03
8 CHILD-COV19 - Children - Biweekly screening 7 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-04 2021-04
9 CHILD-COV19 - Children - Biweekly screening 8 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-04 2021-04
10 CHILD-COV19 - Children - Biweekly screening 9 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-05 2021-05
11 CHILD-COV19 - Children - Biweekly screening 10 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-05 2021-05
12 CHILD-COV19 - Children - Biweekly screening 11 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-06 2021-06
13 CHILD-COV19 - Children - Biweekly screening 12 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-06 2021-06
14 CHILD-COV19 - Children - Biweekly screening 13 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-07 2021-07
15 CHILD-COV19 - Children - Biweekly screening 14 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-07 2021-07
16 CHILD-COV19 - Children - Biweekly screening 15 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-08 2021-08
17 CHILD-COV19 - Children - Follow-up survey 1 Information was collected about the symptoms and impacts of COVID-19, how the pandemic has changed daily lives, and thoughts and worries about the virus, COVID-19 exposure, life changes due to the ... 2021-07 2021-09
18 CHILD-COV19 - Children - Biweekly screening 16 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-08 2021-08
19 CHILD-COV19 - Children - Biweekly screening 17 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-09 2021-09
20 CHILD-COV19 - Children - Biweekly screening 18 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-09 2021-09
21 CHILD-COV19 - Children - Biweekly screening 19 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-10 2021-10
22 CHILD-COV19 - Children - Phase B Sample Collection A dried blood spot card and VAMS (volumetric absorptive microsampling) blood sample, a stool swab, and a saliva sample, were collected. 2021-10 2021-12
23 CHILD-COV19 - Children - Follow-up survey 2 Information was collected about the symptoms and impacts of COVID-19, how the pandemic has changed daily lives, and thoughts and worries about the virus, COVID-19 exposure, life changes due to the ... 2021-10 2021-11
24 CHILD-COV19 - Children - Biweekly screening 20 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-10 2021-10
25 CHILD-COV19 - Children - Follow-up survey 3 Information was collected about the symptoms and impacts of COVID-19, how the pandemic has changed daily lives, and thoughts and worries about the virus, COVID-19 exposure, life changes due to the ... 2022-01 2022-03
Selection Criteria
Newborns
Twins
Countries
  • Canada
Territory
Vancouver, Edmonton, Winnipeg, Toronto
Ethnic Origin
Health Status
Other Criteria
Participants residing outside of Canada

Recruitment

Sources of recruitment
  • Participants from existing studies
Supplementary Information
CHILD study participants were invited to participate.
Participants from Existing Studies
  • CHILD Cohort Study

Number of Participants

Number of Participants
2,583
Number of Participants with Biological Samples
2,583
Data Collection Events
# Name Description Start End
0 CHILD-COV19 - Mothers - Baseline Information was collected about the symptoms and impacts of COVID-19, how the pandemic has changed daily lives, and thoughts and worries about the virus. Blood and stool samples were also ... 2021-01 2021-06
1 CHILD-COV19 - Mothers - Biweekly screening Information was collected from each household through a biweekly screening survey (3 questions), if any answers were “yes” each member of the household completed a more detailed biweekly survey. 2021-01 2021-01
2 CHILD-COV19 - Mothers - Biweekly screening 2 Information was collected from each household through a biweekly screening survey (3 questions), if any answers were “yes” each member of the household completed a more detailed biweekly survey. 2021-01 2021-01
3 CHILD-COV19 - Mothers - Biweekly screening 3 Information was collected from each household through a biweekly screening survey (3 questions), if any answers were “yes” each member of the household completed a more detailed biweekly survey. 2021-02 2021-02
4 CHILD-COV19 - Mothers - Biweekly screening 4 Information was collected from each household through a biweekly screening survey (3 questions), if any answers were “yes” each member of the household completed a more detailed biweekly survey. 2021-02 2021-02
5 CHILD-COV19 - Mothers - Biweekly screening 5 Information was collected from each household through a biweekly screening survey (3 questions), if any answers were “yes” each member of the household completed a more detailed biweekly survey. 2021-03 2021-03
6 CHILD-COV19 - Mothers - Phase A Sample Collection A stool swab, a dried blood spot card and VAMS (volumetric absorptive microsampling) blood was collected. 2021-03 2021-09
7 CHILD-COV19 - Mothers - Biweekly screening 6 Information was collected from each household through a biweekly screening survey (3 questions), if any answers were “yes” each member of the household completed a more detailed biweekly survey. 2021-03 2021-03
8 CHILD-COV19 - Mothers - Biweekly screening 7 Information was collected from each household through a biweekly screening survey (3 questions), if any answers were “yes” each member of the household completed a more detailed biweekly survey. 2021-04 2021-04
9 CHILD-COV19 - Mothers - Biweekly screening 8 Information was collected from each household through a biweekly screening survey (3 questions), if any answers were “yes” each member of the household completed a more detailed biweekly survey. 2021-04 2021-04
10 CHILD-COV19 - Mothers - Biweekly screening 9 Information was collected from each household through a biweekly screening survey (3 questions), if any answers were “yes” each member of the household completed a more detailed biweekly survey. 2021-05 2021-05
11 CHILD-COV19 - Mothers - Biweekly screening 10 Information was collected from each household through a biweekly screening survey (3 questions), if any answers were “yes” each member of the household completed a more detailed biweekly survey. 2021-05 2021-05
12 CHILD-COV19 - Mothers - Biweekly screening 11 Information was collected from each household through a biweekly screening survey (3 questions), if any answers were “yes” each member of the household completed a more detailed biweekly survey. 2021-06 2021-06
13 CHILD-COV19 - Mothers - Biweekly screening 12 Information was collected from each household through a biweekly screening survey (3 questions), if any answers were “yes” each member of the household completed a more detailed biweekly survey. 2021-06 2021-06
14 CHILD-COV19 - Mothers - Biweekly screening 13 Information was collected from each household through a biweekly screening survey (3 questions), if any answers were “yes” each member of the household completed a more detailed biweekly survey. 2021-07 2021-07
15 CHILD-COV19 - Mothers - Biweekly screening 14 Information was collected from each household through a biweekly screening survey (3 questions), if any answers were “yes” each member of the household completed a more detailed biweekly survey. 2021-07 2021-07
16 CHILD-COV19 - Mothers - Biweekly screening 15 Information was collected from each household through a biweekly screening survey (3 questions), if any answers were “yes” each member of the household completed a more detailed biweekly survey. 2021-08 2021-08
17 CHILD-COV19 - Mothers - Follow-up survey 1 Information was collected about the symptoms and impacts of COVID-19, how the pandemic has changed daily lives, and thoughts and worries about the virus. 2021-07 2021-09
18 CHILD-COV19 - Mothers - Biweekly screening 16 Information was collected from each household through a biweekly screening survey (3 questions), if any answers were “yes” each member of the household completed a more detailed biweekly survey. 2021-08 2021-08
19 CHILD-COV19 - Mothers - Biweekly screening 17 Information was collected from each household through a biweekly screening survey (3 questions), if any answers were “yes” each member of the household completed a more detailed biweekly survey. 2021-09 2021-09
20 CHILD-COV19 - Mothers - Biweekly screening 18 Information was collected from each household through a biweekly screening survey (3 questions), if any answers were “yes” each member of the household completed a more detailed biweekly survey. 2021-09 2021-09
21 CHILD-COV19 - Mothers - Biweekly screening 19 Information was collected from each household through a biweekly screening survey (3 questions), if any answers were “yes” each member of the household completed a more detailed biweekly survey. 2021-10 2021-10
22 CHILD-COV19 - Mothers - Phase B Sample Collection A stool swab, a dried blood spot card and VAMS (volumetric absorptive microsampling) blood was collected. 2021-10 2021-12
23 CHILD-COV19 - Mothers - Follow-up survey 2 Information was collected about the symptoms and impacts of COVID-19, how the pandemic has changed daily lives, and thoughts and worries about the virus. 2021-10 2021-11
24 CHILD-COV19 - Mothers - Biweekly screening 20 Information was collected from each household through a biweekly screening survey (3 questions), if any answers were “yes” each member of the household completed a more detailed biweekly survey. 2021-10 2021-10
25 CHILD-COV19 - Mothers - Follow-up survey 3 Information was collected about the symptoms and impacts of COVID-19, how the pandemic has changed daily lives, and thoughts and worries about the virus. 2022-01 2022-03
Selection Criteria
Newborns
Twins
Countries
  • Canada
Territory
Vancouver, Edmonton, Winnipeg, Toronto
Ethnic Origin
Health Status
Other Criteria
Exclusion: Participants residing outside of Canada

Recruitment

Sources of recruitment
  • Participants from existing studies
Supplementary Information
CHILD study participants were invited to participate.
Participants from Existing Studies
  • CHILD Cohort Study

Number of Participants

Number of Participants
1,015
Number of Participants with Biological Samples
1,015
Data Collection Events
# Name Description Start End
0 CHILD-COV19 - Fathers - Baseline Demographic data was collected, as well information about symptoms and impacts of COVID-19, how the pandemic has changed daily lives, and thoughts and worries about the virus, COVID-19 exposure, ... 2021-01 2021-06
1 CHILD-COV19 - Fathers - Biweekly screening Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-01 2021-01
2 CHILD-COV19 - Fathers - Biweekly screening 2 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-01 2021-01
3 CHILD-COV19 - Fathers - Biweekly screening 3 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-02 2021-02
4 CHILD-COV19 - Fathers - Biweekly screening 4 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-02 2021-02
5 CHILD-COV19 - Fathers - Biweekly screening 5 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-03 2021-03
6 CHILD-COV19 - Fathers - Phase A Sample Collection A dried blood spot card and VAMS (volumetric absorptive microsampling) blood sample, a stool swab, and a saliva sample, were collected. 2021-03 2021-09
7 CHILD-COV19 - Fathers - Biweekly screening 6 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-03 2021-03
8 CHILD-COV19 - Fathers - Biweekly screening 7 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-04 2021-04
9 CHILD-COV19 - Fathers - Biweekly screening 8 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-04 2021-04
10 CHILD-COV19 - Fathers - Biweekly screening 9 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-05 2021-05
11 CHILD-COV19 - Fathers - Biweekly screening 10 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-05 2021-05
12 CHILD-COV19 - Fathers - Biweekly screening 11 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-06 2021-06
13 CHILD-COV19 - Fathers - Biweekly screening 12 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-06 2021-06
14 CHILD-COV19 - Fathers - Biweekly screening 13 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-07 2021-07
15 CHILD-COV19 - Fathers - Biweekly screening 14 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-07 2021-07
16 CHILD-COV19 - Fathers - Biweekly screening 15 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-08 2021-08
17 CHILD-COV19 - Fathers - Follow-up survey 1 Information was collected about the symptoms and impacts of COVID-19, how the pandemic has changed daily lives, and thoughts and worries about the virus, COVID-19 exposure, life changes due to the ... 2021-07 2021-09
18 CHILD-COV19 - Fathers - Biweekly screening 16 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-08 2021-08
19 CHILD-COV19 - Fathers - Biweekly screening 17 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-09 2021-09
20 CHILD-COV19 - Fathers - Biweekly screening 18 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-09 2021-09
21 CHILD-COV19 - Fathers - Biweekly screening 19 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-10 2021-10
22 CHILD-COV19 - Fathers - Phase B Sample Collection A dried blood spot card and VAMS (volumetric absorptive microsampling) blood sample, a stool swab, and a saliva sample, were collected. 2021-10 2021-12
23 CHILD-COV19 - Fathers - Follow-up survey 2 Information was collected about the symptoms and impacts of COVID-19, how the pandemic has changed daily lives, and thoughts and worries about the virus, COVID-19 exposure, life changes due to the ... 2021-10 2021-11
24 CHILD-COV19 - Fathers - Biweekly screening 20 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-10 2021-10
25 CHILD-COV19 - Fathers - Follow-up survey 3 Information was collected about the symptoms and impacts of COVID-19, how the pandemic has changed daily lives, and thoughts and worries about the virus. 2022-01 2022-03
Selection Criteria
Minimum age
19
Newborns
Twins
Countries
  • Canada
Territory
Vancouver, Edmonton, Winnipeg, Toronto
Ethnic Origin
Health Status
Other Criteria
Exclusion: Participants residing outside of Canada

Recruitment

Sources of recruitment
  • Specific population
Specific Population
  • Other specific population : Individuals from the children in the CHILD Cohort study's household members.
Supplementary Information
CHILD participants and anyone else living within the same household were invited to participate.

Number of Participants

Number of Participants
110
Number of Participants with Biological Samples
110
Data Collection Events
# Name Description Start End
0 CHILD-COV19 - Other adults - Baseline Demographic data was collected, as well information about symptoms and impacts of COVID-19, how the pandemic has changed daily lives, and thoughts and worries about the virus, COVID-19 exposure, ... 2021-01 2021-06
1 CHILD-COV19 - Other adults - Biweekly screening Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-01 2021-01
2 CHILD-COV19 - Other adults - Biweekly screening 2 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-01 2021-01
3 CHILD-COV19 - Other adults - Biweekly screening 3 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-02 2021-02
4 CHILD-COV19 - Other adults - Biweekly screening 4 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-02 2021-02
5 CHILD-COV19 - Other adults - Biweekly screening 5 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-03 2021-03
6 CHILD-COV19 - Other adults - Phase A Sample Collection A dried blood spot card and VAMS (volumetric absorptive microsampling) blood sample, a stool swab, and a saliva sample, were collected. 2021-03 2021-09
7 CHILD-COV19 - Other adults - Biweekly screening 6 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-03 2021-03
8 CHILD-COV19 - Other adults - Biweekly screening 7 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-04 2021-04
9 CHILD-COV19 - Other adults - Biweekly screening 8 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-04 2021-04
10 CHILD-COV19 - Other adults - Biweekly screening 9 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-05 2021-05
11 CHILD-COV19 - Other adults - Biweekly screening 10 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-05 2021-05
12 CHILD-COV19 - Other adults - Biweekly screening 11 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-06 2021-06
13 CHILD-COV19 - Other adults - Biweekly screening 12 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-06 2021-06
14 CHILD-COV19 - Other adults - Biweekly screening 13 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-07 2021-07
15 CHILD-COV19 - Other adults - Biweekly screening 14 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-07 2021-07
16 CHILD-COV19 - Other adults - Biweekly screening 15 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-08 2021-08
17 CHILD-COV19 - Other adults - Follow-up survey 1 Information was collected about the symptoms and impacts of COVID-19, how the pandemic has changed daily lives, and thoughts and worries about the virus, COVID-19 exposure, life changes due to the ... 2021-07 2021-09
18 CHILD-COV19 - Other adults - Biweekly screening 16 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-08 2021-08
19 CHILD-COV19 - Other adults - Biweekly screening 17 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-09 2021-09
20 CHILD-COV19 - Other adults - Biweekly screening 18 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-09 2021-09
21 CHILD-COV19 - Other adults - Biweekly screening 19 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-10 2021-10
22 CHILD-COV19 - Other adults - Phase B Sample Collection A dried blood spot card and VAMS (volumetric absorptive microsampling) blood sample, a stool swab, and a saliva sample, were collected. 2021-10 2021-12
23 CHILD-COV19 - Other adults - Follow-up survey 2 Information was collected about the symptoms and impacts of COVID-19, how the pandemic has changed daily lives, and thoughts and worries about the virus, COVID-19 exposure, life changes due to the ... 2021-10 2021-11
24 CHILD-COV19 - Other adults - Biweekly screening 20 Information about COVID-19 signs and symptoms, testing and results, and healthcare utilization was collected from each household through a biweekly screening survey. 2021-10 2021-10
25 CHILD-COV19 - Other adults - Follow-up survey 3 Information was collected about the symptoms and impacts of COVID-19, how the pandemic has changed daily lives, and thoughts and worries about the virus, COVID-19 exposure, life changes due to the ... 2022-01 2022-03

Classifications

Socio-demographic and economic characteristics
Lifestyle and behaviours
Birth, pregnancy and reproductive health history
Perception of health, quality of life, development and functional limitations
Diseases
Symptoms and signs
Medication and supplements
Non-pharmacological interventions
Health and community care services utilization
Death
Physical measures and assessments
Laboratory measures
Cognition, personality and psychological measures and assessments
Life events, life plans, beliefs and values
Preschool, school and work life
Social environment and relationships
Physical environment
Administrative information

Socio-demographic and economic characteristics

Age/birthdate
Sex/gender
Family and household structure
Education
Residence
Ethnicity, race and religion
Labour force and retirement
Income, possessions, and benefits

Lifestyle and behaviours

Tobacco
Alcohol
Drugs
Nutrition
Physical activity
Transportation
Sleep
Leisure activities
Technological devices

Perception of health, quality of life, development and functional limitations

Perception of health
Quality of life

Diseases

Certain infectious and parasitic diseases (A00-B99)
Neoplasms (C00-D48)
Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89)
Endocrine, nutritional and metabolic diseases (E00-E90)
Mental and behavioural disorders (F00-F99)
Diseases of the nervous system (G00-G99)
Diseases of the circulatory system (I00-I99)
Diseases of the respiratory system (J00-J99)
Diseases of the digestive system (K00-K93)
Diseases of the skin and subcutaneous tissue (L00-L99)
Diseases of the musculoskeletal system and connective tissue (M00-M99)
Diseases of the genitourinary system (N00-N99)
Injury, poisoning and certain other consequences of external causes (S00-T98)
Diseases without precise specification or falling into multiple categories

Symptoms and signs

Symptoms related to multiple categories

Medication and supplements

Medication and supplement intake
Posology and protocol of administration

Non-pharmacological interventions

Cognitive, psychological and sensory interventions
Educational and health promotion interventions
Laboratory diagnosis interventions
Other and unspecified non-pharmacological interventions

Health and community care services utilization

Visits to health professionals

Physical measures and assessments

Anthropometry

Cognition, personality and psychological measures and assessments

Psychological distress and emotions
Other psychological measures and assessments

Life events, life plans, beliefs and values

Life events
Beliefs and values

Preschool, school and work life

Preschool life
School life
Work life

Social environment and relationships

Social participation
Social support
Parenting and familial environment

Physical environment

Housing characteristics
Biological exposure

Administrative information

Identifiers
Date and time-related information
Questionnaire and interview-related information
Other administrative information