Study of the Epidemiology of COVID-19 in Teachers and Education Workers in Elementary and Secondary Schools in Ontario
Networks
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Datasets
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Variables
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The objectives of this study are:
* To estimate the rate of previous exposure to COVID-19 as evidenced by the prevalence of anti-SARS-CoV-2 antibodies in teachers and education workers at enrolment (February or March, 2021);
* To identify workplace (e.g., level of student contact, school/class size, age of pupils, school-wide protective measures), community (e.g., rates of infection, outbreak level), household (e.g., number of housemates, housemates’ exposures, confirmed COVID-19 infections), and individual (e.g., age, health status, individual protective measures) risk and protective factors for COVID-19 in teachers and education workers;
* To determine the incidence of symptomatic COVID-19 infection in teachers and education workers between February or March 2021 and February or March 2022;
* To estimate the incidence of asymptomatic infection in teachers and education workers between February or March 2021 and February or March 2022 as measured by seroconversion to anti-SARS-CoV-2 antibodies;
* To describe the psychological impact of working during an outbreak of a novel respiratory virus;
* To describe the changes in anti-SARS-CoV-2 antibodies over a one-year follow-up period in participants who have detectable antibodies measured at baseline;
* To determine the percentage of teachers and education workers who intend to be vaccinated against COVID-19 (at baseline); and
* To determine the incidence of and factors associated with re-infection (exploratory objective).
- Start Year
- 2021
- End Year
- 2022
- Supplementary Information
- French: http://www.tibdn.ca/covid-19/education-fr
Visit CCS-2
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Design
- Study design
- Cross-sectional
- Follow Up
- Participants who tested negative (Cohort A) or positive (Cohort B) for antibodies to SARS-CoV-2 at enrolment will be followed for 12 months: biweekly, every 13 weeks, prior to – and 30 days after – receipt of each COVID vaccine (as possible).
- Supplementary Information
- The study is a cross-sectional study (Phase I) followed by two nested prospective cohort sub-studies (Phase II).
Recruitment
- Recruitment Target
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- Individuals
Number of Participants
- Number of Participants
- 7,000
- Number of Participants with Biological Samples
- 7,000
- Supplementary Information
Access
Availability of data and biosamples
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| Possible Access to Biosamples | |
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Timeline
CCS-2 population
The population is composed of teachers and education workers (educational assistants, school office staff, custodians, librarians, early childhood educators), aged between 18-74 years old, in Ontario.
Selection Criteria
- Minimum age
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18
- Maximum age
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74
- Newborns
- Twins
- Countries
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- Canada
- Territory
- Ethnic Origin
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- Health Status
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- Do not have a bleeding disorder, have not had chemotherapy in the past 4 weeks, and have not had a bilateral mastectomy
- Other Criteria
- Inclusion: employed in any capacity by an Ontario public school board or independent school; work, on average, at least 8 hours per week and can be available for at least the next 3 months after enrolment
Recruitment
- Sources of recruitment
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- Specific population
- Specific Population
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- Other specific population : Teachers and education workers
- Supplementary Information
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Participants were recruited by advertising of the study to key partners membership, using a variety of media including inclusion in emails and updates and posting on their website and social media sites; promoting the study through stories about the study and interviews on radio, newspapers, and television, and posting on Facebook, Twitter, and LinkedIn.
Number of Participants
- Number of Participants
- 7,000
- Number of Participants with Biological Samples
- 7,000
- Supplementary Information about selection criteria
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Phase I: 7000 participants
Phase II Cohort A: 6650 participants
Phase II Cohort B: 350 participants
Data Collection Events
| # | Name | Description | Start | End |
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| 0 |
CCS-2 - Phase I Baseline
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Information about the workplace (level of student contact, school/class size, age of pupils, school-wide protective measures), household (number of housemates, housemates’ exposures, confirmed ... | 2021-01 | 2021-02 |
| 1 |
CCS-2 - Phase II Follow-up 1
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Non-specific psychological distress was measured using the Kessler Psychological Distress Scale (K10). Blood sample was collected using the dried blood spot (DBS) test for the detection ... | 2021-03 | 2021-05 |
| 2 |
CCS-2 - Phase II Follow-up 2
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Non-specific psychological distress was measured using the Kessler Psychological Distress Scale (K10). Blood sample was collected using the dried blood spot (DBS) test for the detection ... | 2021-06 | 2021-08 |
| 3 |
CCS-2 - Phase II Follow-up 3
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Non-specific psychological distress was measured using the Kessler Psychological Distress Scale (K10). Blood sample was collected using the dried blood spot (DBS) test for the detection ... | 2021-09 | 2021-11 |
| 4 |
CCS-2 - Phase II Follow-up 4
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Non-specific psychological distress was measured using the Kessler Psychological Distress Scale (K10). Blood sample was collected using the dried blood spot (DBS) test for the detection ... | 2021-12 | 2022-02 |
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CCS-2 - Phase II Vaccination
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Vaccination questionnaires will be available on the participants’ dashboard which ask for the date and the manufacturer/name of the vaccine. Blood sample was collected the day(s) of or day before ... | 2021-06 | 2022-03 |
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CCS-2 - Phase II 30-days post-vaccination
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Blood sample was collected using the dried blood spot (DBS) test for the detection (presence/absence) of IgG antibodies to SARS-CoV-2. | 2021-06 | 2022-03 |
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CCS-2 - Phase II Biweekly reports
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Information about symptoms of a respiratory illness, COVID-19 testing, and vaccination against COVID-19 (date and name) in the previous 14 days was collected. Information about COVID-19 testing ... | 2021-01 | 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
Sex/gender
Family and household structure
Education
Residence
Ethnicity, race and religion
Labour force and retirement
Income, possessions, and benefits
Lifestyle and behaviours
Tobacco
Drugs
Nutrition
Transportation
Leisure activities
Other and unspecified lifestyle information
Perception of health, quality of life, development and functional limitations
Perception of health
Use of assistive devices
Diseases
Certain infectious and parasitic diseases (A00-B99)
Neoplasms (C00-D48)
Endocrine, nutritional and metabolic diseases (E00-E90)
Diseases of the nervous system (G00-G99)
Diseases of the circulatory system (I00-I99)
Diseases of the respiratory system (J00-J99)
Diseases without precise specification or falling into multiple categories
Symptoms and signs
Symptoms related to multiple categories
Medication and supplements
Medication and supplement intake
Non-pharmacological interventions
Laboratory diagnosis interventions
Other and unspecified non-pharmacological interventions
Laboratory measures
Virology
Cognition, personality and psychological measures and assessments
Psychological distress and emotions
Life events, life plans, beliefs and values
Beliefs and values
Preschool, school and work life
Work life
Social environment and relationships
Social participation
Physical environment
Housing characteristics
Biological exposure
Other physical environment characteristics
Administrative information
Identifiers
Date and time-related information
Questionnaire and interview-related information