Héma-Québec Seroprevalence Study
Networks
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Datasets
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Variables
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The objectives of the study are to :
1. Estimate the proportion of population that was infected by the SARS-CoV-2 virus in the province of Quebec, particularly in the greater Montreal area, during the first wave of COVID-19;
2. Monitor the evolution of this proportion until the end of the pandemic and;
3. Estimate the proportion of people infected with SARS-CoV-2 who remained asymptomatic during the first wave of the disease.
- Start Year
- 2020
Visit HQ
| Investigators | Contacts |
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Design
- Study design
- Cohort
- Follow Up
- In order to continue monitoring the evolution of COVID-19 in Quebec, the study may be repeated at regular intervals until the end of the pandemic. The first follow-up will begin in January 2021 and will continue over a 7-week period in the context of the second wave of the pandemic.
Recruitment
- Recruitment Target
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- Individuals
Number of Participants
- Number of Participants
- 7,691
- Number of Participants with Biological Samples
- 7,691
Access
Availability of data and biosamples
| Possible Access to Data | |
| Possible Access to Biosamples | |
| Other |
Timeline
HQ population
The population is composed of individuals aged 18 to 81 who donated blood between May 25 and July 9 2020 in 14 of Quebec's 18 health regions.
Selection Criteria
- Minimum age
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18
- Maximum age
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81
- Newborns
- Twins
- Countries
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- Canada
- Territory
- Ethnic Origin
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- Health Status
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- Being eligible for regular blood donation (good health)
- Other Criteria
- Exclusion: symptoms of COVID-19 in the last 14 days prior to their donation
Recruitment
- Sources of recruitment
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- Specific population
- Specific Population
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- Other specific population : Blood donors
- Supplementary Information
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The participants of this seroprevalence study were regular blood donors who completed their donation between May 25 and July 9 2020.
Number of Participants
- Number of Participants
- 7,691
- Number of Participants with Biological Samples
- 7,691
Data Collection Events
| # | Name | Description | Start | End |
|---|---|---|---|---|
| 0 |
HQ - Wave 1
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Blood samples were collected for a serological test that was used to determine the presence of antibodies to SARS-CoV-2. | 2020-05 | 2020-07 |
| 1 |
HQ - Nested case-control study
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Information was collected from participants in whom antibodies to SARS-CoV-2 had been detected. A questionnaire was completed, through a telephone interview, to collect information about the ... | 2020-05 | 2020-07 |
| 2 |
HQ - Wave 2
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Blood samples were collected for a serological test that was used to determine the presence of antibodies to SARS-CoV-2. | 2021-01 | 2021-03 |
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
Residence
Ethnicity, race and religion
Laboratory measures
Immunology
Administrative information
Identifiers
Date and time-related information