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COVID-19 Cohort Study (CCS) for people working in acute care hospitals

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 participating acute care hospitals who are 18-75 years of age
  • Who work 20 hours or more per week – or – physicians/nurse practitioners who care for patients for 8 hours or more per week
  • Who has a home computer or phone with internet access
  • Plans 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

  • Blood draws now, in mid-November, & at the end of the pandemic – to learn about asymptomatic infections
  • 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

*Participation is voluntary


Participating hospitals Investigators
Mount Sinai Hospital 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

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