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COVID-19 Cohort Study (CCS) for people working in healthcare

Status: Currently enrolling

Local researchers need staff to participate in a study about risk factors for COVID-19 in healthcare workers.

Who are they looking for?

  • Staff working in one of our participating healthcare sites (see below) who are 18-75 years of age and who work 20 hours or more per week
  • – or – physicians/nurse practitioners/midwives (and their office staff) who practice/work 20 hours or more per week, are 18-75 years of age, and whose practice is located in the Greater Toronto Area
  • Who have a home computer or phone with internet access
  • And plan to be available for the next 3 months

What is required?

  • Online baseline & weekly questionnaires
  • When you are tested for COVID-19:
    • Complete an illness report to inform the study of your test results, symptoms, and contact with people who may have been ill & report symptoms daily
    • Submit a nasal swab to the study lab on the same day you submit one for testing to find out how many viruses you may be carrying

Optional sections

  • 3 or more blood draws: when you join, about 6 months from now, and about 12 months from now and, if you test positive for COVID-19: every 30 days after your test.
  • Invite adults & children in your home to join – to learn about transmission within households & about the microbiome & early immune responses that may protect people from infection. They are asked to provide blood to test for antibodies as well.

*Participation is voluntary


Participating sites Investigators
Sinai Health System Dr. Allison McGeer & Dr. Brenda Coleman
North York General Dr. Kevin Katz
Sunnybrook Health Sciences Centre Dr. Samira Mubareka
Michael Garron Dr. Jeff Powis & Dr. Chris Kandell
Unity Health (St. Michael’s site) Dr. Matthew Muller
University Health Network Dr. Allison McGeer
Private physician, nurse practitioner, or midwifery practices in the Greater Toronto Area Dr. Brenda Coleman

For further information click on the link to the site for which you work.