CHILD Cohort Study COVID-19 Add-On Study
The objectives of this study are to:
1. Provide real-time data on SARS-CoV-2 infection, severity, transmission and immune response in Canadian children and adults participating in the existing CHILD Cohort.
2. Identify biological, health and sociodemographic predictors of SARS-CoV-2 infection susceptibility and severity in the CHILD cohort.
3. Understand the psychosocial, health and equity impacts of the COVID-19 pandemic and its management on CHILD families, and identify equity impacts.
Overview
- Acronym
- CHILD-COV19
- Website
- CHILD-COV19
- Investigators
-
General Design
- Study design
- Cohort
- Start - End Year
- 2020 -
- General Information on Follow Up (profile, frequency)
-
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 Target
-
- Families
- Number of Participants
- 5,378
- Supplementary information about number of participants
-
5378 participants enrolled from 1462 households:
1431 Mothers
1015 Fathers
2826 Children (0-19 years)
110 Others adults (>19 years of age)
Timeline
Populations
CHILD-COV19 - Children
The population is composed of participants (children) from the core CHILD
Cohort Study and any other children living within the same household as a mother or father CHILD participant.
Selection Criteria
- Countries
-
- Canada
- Canadian Provinces
-
- Alberta
- British Columbia
- Manitoba
- Ontario
- Other Criteria
- Exclusion: Participants residing outside of Canada
Sources of Recruitment
- General Population
-
- Volunteer enrolment
- Participants from Existing Studies
-
- CHILD Cohort Study
- Supplementary Information
-
CHILD participants and anyone else living within the same household were invited to participate.
Sample Size
- Number of Participants
- 2,726
- Number of Participants with Biological Samples
- 2,726
Data Collection Events
| # | Name | Data sources | Data sources - Biosamples | Start | End |
|---|---|---|---|---|---|
| 0 | CHILD-COV19 - Children - Baseline |
|
2021 (January) | 2021 (June) | |
| 1 | CHILD-COV19 - Children - Biweekly screening |
|
2021 (January) | 2021 (January) | |
| 2 | CHILD-COV19 - Children - Biweekly screening 2 |
|
2021 (January) | 2021 (January) | |
| 3 | CHILD-COV19 - Children - Biweekly screening 3 |
|
2021 (February) | 2021 (February) | |
| 4 | CHILD-COV19 - Children - Biweekly screening 4 |
|
2021 (February) | 2021 (February) | |
| 5 | CHILD-COV19 - Children - Biweekly screening 5 |
|
2021 (March) | 2021 (March) | |
| 6 | CHILD-COV19 - Children - Phase A Sample Collection |
|
|
2021 (March) | 2021 (September) |
| 7 | CHILD-COV19 - Children - Biweekly screening 6 |
|
2021 (March) | 2021 (March) | |
| 8 | CHILD-COV19 - Children - Biweekly screening 7 |
|
2021 (April) | 2021 (April) | |
| 9 | CHILD-COV19 - Children - Biweekly screening 8 |
|
2021 (April) | 2021 (April) | |
| 10 | CHILD-COV19 - Children - Biweekly screening 9 |
|
2021 (May) | 2021 (May) | |
| 11 | CHILD-COV19 - Children - Biweekly screening 10 |
|
2021 (May) | 2021 (May) | |
| 12 | CHILD-COV19 - Children - Biweekly screening 11 |
|
2021 (June) | 2021 (June) | |
| 13 | CHILD-COV19 - Children - Biweekly screening 12 |
|
2021 (June) | 2021 (June) | |
| 14 | CHILD-COV19 - Children - Biweekly screening 13 |
|
2021 (July) | 2021 (July) | |
| 15 | CHILD-COV19 - Children - Biweekly screening 14 |
|
2021 (July) | 2021 (July) | |
| 16 | CHILD-COV19 - Children - Biweekly screening 15 |
|
2021 (August) | 2021 (August) | |
| 17 | CHILD-COV19 - Children - Follow-up survey 1 |
|
2021 (July) | 2021 (September) | |
| 18 | CHILD-COV19 - Children - Biweekly screening 16 |
|
2021 (August) | 2021 (August) | |
| 19 | CHILD-COV19 - Children - Biweekly screening 17 |
|
2021 (September) | 2021 (September) | |
| 20 | CHILD-COV19 - Children - Biweekly screening 18 |
|
2021 (September) | 2021 (September) | |
| 21 | CHILD-COV19 - Children - Biweekly screening 19 |
|
2021 (October) | 2021 (October) | |
| 22 | CHILD-COV19 - Children - Phase B Sample Collection |
|
|
2021 (October) | 2021 (December) |
| 23 | CHILD-COV19 - Children - Follow-up survey 2 |
|
2021 (October) | 2021 (November) | |
| 24 | CHILD-COV19 - Children - Biweekly screening 20 |
|
2021 (October) | 2021 (October) | |
| 25 | CHILD-COV19 - Children - Follow-up survey 3 |
|
2022 (January) | 2022 (March) |
CHILD-COV19 - Mothers
The population is composed of mothers from the core CHILD Cohort Study; composed of women aged 18 years and older (at initial recruitment to CHILD in 2009-12).
Selection Criteria
- Countries
-
- Canada
- Canadian Provinces
-
- Alberta
- British Columbia
- Manitoba
- Ontario
- Territory
- Vancouver, Edmonton, Winnipeg, Toronto
- Other Criteria
- Participants residing outside of Canada
Sources of Recruitment
- Participants from Existing Studies
-
- CHILD Cohort Study
- Supplementary Information
-
CHILD study participants were invited to participate.
Sample Size
- Number of Participants
- 2,583
- Number of Participants with Biological Samples
- 2,583
Data Collection Events
| # | Name | Data sources | Data sources - Biosamples | Start | End |
|---|---|---|---|---|---|
| 0 | CHILD-COV19 - Mothers - Baseline |
|
|
2021 (January) | 2021 (June) |
| 1 | CHILD-COV19 - Mothers - Biweekly screening |
|
2021 (January) | 2021 (January) | |
| 2 | CHILD-COV19 - Mothers - Biweekly screening 2 |
|
2021 (January) | 2021 (January) | |
| 3 | CHILD-COV19 - Mothers - Biweekly screening 3 |
|
2021 (February) | 2021 (February) | |
| 4 | CHILD-COV19 - Mothers - Biweekly screening 4 |
|
2021 (February) | 2021 (February) | |
| 5 | CHILD-COV19 - Mothers - Biweekly screening 5 |
|
2021 (March) | 2021 (March) | |
| 6 | CHILD-COV19 - Mothers - Phase A Sample Collection |
|
|
2021 (March) | 2021 (September) |
| 7 | CHILD-COV19 - Mothers - Biweekly screening 6 |
|
2021 (March) | 2021 (March) | |
| 8 | CHILD-COV19 - Mothers - Biweekly screening 7 |
|
2021 (April) | 2021 (April) | |
| 9 | CHILD-COV19 - Mothers - Biweekly screening 8 |
|
2021 (April) | 2021 (April) | |
| 10 | CHILD-COV19 - Mothers - Biweekly screening 9 |
|
2021 (May) | 2021 (May) | |
| 11 | CHILD-COV19 - Mothers - Biweekly screening 10 |
|
2021 (May) | 2021 (May) | |
| 12 | CHILD-COV19 - Mothers - Biweekly screening 11 |
|
2021 (June) | 2021 (June) | |
| 13 | CHILD-COV19 - Mothers - Biweekly screening 12 |
|
2021 (June) | 2021 (June) | |
| 14 | CHILD-COV19 - Mothers - Biweekly screening 13 |
|
2021 (July) | 2021 (July) | |
| 15 | CHILD-COV19 - Mothers - Biweekly screening 14 |
|
2021 (July) | 2021 (July) | |
| 16 | CHILD-COV19 - Mothers - Biweekly screening 15 |
|
2021 (August) | 2021 (August) | |
| 17 | CHILD-COV19 - Mothers - Follow-up survey 1 |
|
2021 (July) | 2021 (September) | |
| 18 | CHILD-COV19 - Mothers - Biweekly screening 16 |
|
2021 (August) | 2021 (August) | |
| 19 | CHILD-COV19 - Mothers - Biweekly screening 17 |
|
2021 (September) | 2021 (September) | |
| 20 | CHILD-COV19 - Mothers - Biweekly screening 18 |
|
2021 (September) | 2021 (September) | |
| 21 | CHILD-COV19 - Mothers - Biweekly screening 19 |
|
2021 (October) | 2021 (October) | |
| 22 | CHILD-COV19 - Mothers - Phase B Sample Collection |
|
|
2021 (October) | 2021 (December) |
| 23 | CHILD-COV19 - Mothers - Follow-up survey 2 |
|
2021 (October) | 2021 (November) | |
| 24 | CHILD-COV19 - Mothers - Biweekly screening 20 |
|
2021 (October) | 2021 (October) | |
| 25 | CHILD-COV19 - Mothers - Follow-up survey 3 |
|
2022 (January) | 2022 (March) |
CHILD-COV19 - Fathers
The population is composed of fathers of the children from the core CHILD Cohort Study.
Selection Criteria
- Countries
-
- Canada
- Canadian Provinces
-
- Alberta
- British Columbia
- Manitoba
- Ontario
- Territory
- Vancouver, Edmonton, Winnipeg, Toronto
- Other Criteria
- Exclusion: Participants residing outside of Canada
Sources of Recruitment
- Participants from Existing Studies
-
- CHILD Cohort Study
- Supplementary Information
-
CHILD study participants were invited to participate.
Sample Size
- Number of Participants
- 1,015
- Number of Participants with Biological Samples
- 1,015
Data Collection Events
| # | Name | Data sources | Data sources - Biosamples | Start | End |
|---|---|---|---|---|---|
| 0 | CHILD-COV19 - Fathers - Baseline |
|
2021 (January) | 2021 (June) | |
| 1 | CHILD-COV19 - Fathers - Biweekly screening |
|
2021 (January) | 2021 (January) | |
| 2 | CHILD-COV19 - Fathers - Biweekly screening 2 |
|
2021 (January) | 2021 (January) | |
| 3 | CHILD-COV19 - Fathers - Biweekly screening 3 |
|
2021 (February) | 2021 (February) | |
| 4 | CHILD-COV19 - Fathers - Biweekly screening 4 |
|
2021 (February) | 2021 (February) | |
| 5 | CHILD-COV19 - Fathers - Biweekly screening 5 |
|
2021 (March) | 2021 (March) | |
| 6 | CHILD-COV19 - Fathers - Phase A Sample Collection |
|
|
2021 (March) | 2021 (September) |
| 7 | CHILD-COV19 - Fathers - Biweekly screening 6 |
|
2021 (March) | 2021 (March) | |
| 8 | CHILD-COV19 - Fathers - Biweekly screening 7 |
|
2021 (April) | 2021 (April) | |
| 9 | CHILD-COV19 - Fathers - Biweekly screening 8 |
|
2021 (April) | 2021 (April) | |
| 10 | CHILD-COV19 - Fathers - Biweekly screening 9 |
|
2021 (May) | 2021 (May) | |
| 11 | CHILD-COV19 - Fathers - Biweekly screening 10 |
|
2021 (May) | 2021 (May) | |
| 12 | CHILD-COV19 - Fathers - Biweekly screening 11 |
|
2021 (June) | 2021 (June) | |
| 13 | CHILD-COV19 - Fathers - Biweekly screening 12 |
|
2021 (June) | 2021 (June) | |
| 14 | CHILD-COV19 - Fathers - Biweekly screening 13 |
|
2021 (July) | 2021 (July) | |
| 15 | CHILD-COV19 - Fathers - Biweekly screening 14 |
|
2021 (July) | 2021 (July) | |
| 16 | CHILD-COV19 - Fathers - Biweekly screening 15 |
|
2021 (August) | 2021 (August) | |
| 17 | CHILD-COV19 - Fathers - Follow-up survey 1 |
|
2021 (July) | 2021 (September) | |
| 18 | CHILD-COV19 - Fathers - Biweekly screening 16 |
|
2021 (August) | 2021 (August) | |
| 19 | CHILD-COV19 - Fathers - Biweekly screening 17 |
|
2021 (September) | 2021 (September) | |
| 20 | CHILD-COV19 - Fathers - Biweekly screening 18 |
|
2021 (September) | 2021 (September) | |
| 21 | CHILD-COV19 - Fathers - Biweekly screening 19 |
|
2021 (October) | 2021 (October) | |
| 22 | CHILD-COV19 - Fathers - Phase B Sample Collection |
|
|
2021 (October) | 2021 (December) |
| 23 | CHILD-COV19 - Fathers - Follow-up survey 2 |
|
2021 (October) | 2021 (November) | |
| 24 | CHILD-COV19 - Fathers - Biweekly screening 20 |
|
2021 (October) | 2021 (October) | |
| 25 | CHILD-COV19 - Fathers - Follow-up survey 3 |
|
2022 (January) | 2022 (March) |
CHILD-COV19 - Other adults
The population is composed of interested individuals from the children in the CHILD Cohort study's household members (siblings, grandparents, aunts, uncles, step parents etc).
Selection Criteria
- Minimum age
-
19
- Countries
-
- Canada
- Canadian Provinces
-
- Alberta
- British Columbia
- Manitoba
- Ontario
- Territory
- Vancouver, Edmonton, Winnipeg, Toronto
- Other Criteria
- Exclusion: Participants residing outside of Canada
Sources of Recruitment
- 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.
Sample Size
- Number of Participants
- 110
- Number of Participants with Biological Samples
- 110
Data Collection Events
| # | Name | Data sources | Data sources - Biosamples | Start | End |
|---|---|---|---|---|---|
| 0 | CHILD-COV19 - Other adults - Baseline |
|
2021 (January) | 2021 (June) | |
| 1 | CHILD-COV19 - Other adults - Biweekly screening |
|
2021 (January) | 2021 (January) | |
| 2 | CHILD-COV19 - Other adults - Biweekly screening 2 |
|
2021 (January) | 2021 (January) | |
| 3 | CHILD-COV19 - Other adults - Biweekly screening 3 |
|
2021 (February) | 2021 (February) | |
| 4 | CHILD-COV19 - Other adults - Biweekly screening 4 |
|
2021 (February) | 2021 (February) | |
| 5 | CHILD-COV19 - Other adults - Biweekly screening 5 |
|
2021 (March) | 2021 (March) | |
| 6 | CHILD-COV19 - Other adults - Phase A Sample Collection |
|
|
2021 (March) | 2021 (September) |
| 7 | CHILD-COV19 - Other adults - Biweekly screening 6 |
|
2021 (March) | 2021 (March) | |
| 8 | CHILD-COV19 - Other adults - Biweekly screening 7 |
|
2021 (April) | 2021 (April) | |
| 9 | CHILD-COV19 - Other adults - Biweekly screening 8 |
|
2021 (April) | 2021 (April) | |
| 10 | CHILD-COV19 - Other adults - Biweekly screening 9 |
|
2021 (May) | 2021 (May) | |
| 11 | CHILD-COV19 - Other adults - Biweekly screening 10 |
|
2021 (May) | 2021 (May) | |
| 12 | CHILD-COV19 - Other adults - Biweekly screening 11 |
|
2021 (June) | 2021 (June) | |
| 13 | CHILD-COV19 - Other adults - Biweekly screening 12 |
|
2021 (June) | 2021 (June) | |
| 14 | CHILD-COV19 - Other adults - Biweekly screening 13 |
|
2021 (July) | 2021 (July) | |
| 15 | CHILD-COV19 - Other adults - Biweekly screening 14 |
|
2021 (July) | 2021 (July) | |
| 16 | CHILD-COV19 - Other adults - Biweekly screening 15 |
|
2021 (August) | 2021 (August) | |
| 17 | CHILD-COV19 - Other adults - Follow-up survey 1 |
|
2021 (July) | 2021 (September) | |
| 18 | CHILD-COV19 - Other adults - Biweekly screening 16 |
|
2021 (August) | 2021 (August) | |
| 19 | CHILD-COV19 - Other adults - Biweekly screening 17 |
|
2021 (September) | 2021 (September) | |
| 20 | CHILD-COV19 - Other adults - Biweekly screening 18 |
|
2021 (September) | 2021 (September) | |
| 21 | CHILD-COV19 - Other adults - Biweekly screening 19 |
|
2021 (October) | 2021 (October) | |
| 22 | CHILD-COV19 - Other adults - Phase B Sample Collection |
|
|
2021 (October) | 2021 (December) |
| 23 | CHILD-COV19 - Other adults - Follow-up survey 2 |
|
2021 (October) | 2021 (November) | |
| 24 | CHILD-COV19 - Other adults - Biweekly screening 20 |
|
2021 (October) | 2021 (October) | |
| 25 | CHILD-COV19 - Other adults - Follow-up survey 3 |
|
2022 (January) | 2022 (March) |
Participating Studies
| Acronym | Name | Study design | Countries |
|---|
Harmonization Initiatives Included
| Acronym | Name |
|---|
Datasets
| Name | Data Collection Events | Variables |
|---|
Areas of Information Collected
- Socio-demographic and economic characteristics
- Death
- Lifestyle and behaviours
- Physical measures and assessments
- Birth, pregnancy and reproductive health history
- Laboratory measures
- Perception of health, quality of life, development and functional limitations
- Cognition, personality and psychological measures and assessments
- Diseases
- Life events, life plans, beliefs and values
- Symptoms and signs
- Preschool, school and work life
- Medication and supplements
- Social environment and relationships
- Non-pharmacological interventions
- Physical environment
- Health and community care services utilization
- Administrative information
Variables Content Summary
Areas of Information Collected
No Areas of Information Collected
No Scales Collected
Areas of Information Collected per per Population and Data Collection Event
No Areas of Information Collected
No Scales Collected
Networks
| Acronym | Name | Harmonization Initiatives | Individual Studies |
|---|
Last Update: 2024-02-27T06:38:23.800