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COVID-19 Cohort Study (CCS): Study of the epidemiology of COVID-19 in healthcare workers and their households

Join a research study about COVID-19 in hospital workers

Status: Currently enrolling Click here to join Already a participant? Click here to log in

What is being studied?
    • The number of COVID-19 infections and factors linked with infection
    • Antibodies against COVID-19
    • Effect of COVID-19 vaccines
    • Psychological impact of working during a pandemic

Who can participate?
Staff working at any of the hospitals/sites associated with either Hamilton Health Sciences (HHS) or St. Joseph’s Healthcare Hamilton (SJHH)
    • Who are 18-75 years of age
    • Who work anywhere in the hospital for more than 20 hours per week 
OR - is a MD/NP with privileges and spends at least 8 hours per week in the hospital
    • Who have access to a computer or phone with internet access, and
    • Who plan to be available at least for the next 3 months

What is required?
    • Questionnaires when you join and then every week (online)
    • Report when you are tested for COVID-19
    • Report when you are vaccinated against COVID-19
    • Blood samples: provide none, one, or several
            ▪ when you join, in 6 months, and at the end of the study;
            ▪ if you test positive for COVID-19: 30 days (or every 30 days) after your positive test; and/or
            ▪ If you are vaccinated against COVID-19: prior to receiving each dose and again 28 days after the final dose
    • Invite adults and children in your home to join (optional, see the information sheets & consent forms below, for details)

Participation is voluntary

A small monetary gift is available for participating.

People are welcome to join whether or not they have been vaccinated against COVID-19.

If you have questions, please email COVID.study@sinaihealth.ca or call (416) 294-6383 weekdays between 8:00 AM and 6:00 PM.

Hamilton site investigators:  Dr. Mark Loeb (HHS) & Dr. Marek Smieja (SJHH)


Click here to join Already a participant? Click here to log in

Information Sheet and Consent Form