The COVID-19 Occupational Risks, Seroprevalence and Immunity among Paramedics (CORSIP) project seeks to identify COVID19-related occupational risks to paramedics and develop recommendations to protect paramedic health


We are still welcoming new participants!

NEW - the study will be extended beyond February 2022 to allow all participants to complete 3 blood tests & questionnaires over the study period. We are also planning an additional time-point (more information to follow in the New Year).

When can I expect my next blood sample results? Samples are being tested the week of Nov 22, 2021 and we estimate results will take 2-4 weeks. Samples received after this date will be sent for the next round of testing in approx. 1 month.

Please check your study Participant Portal for a collection date if you want to confirm receipt of your blood sample (please note that samples can take 2 – 4 weeks to arrive).

When should I complete the study blood tests?

  • Please provide your 1st blood sample at the time of enrollment, and 2 additional samples during the study. If you have enrolled and not provided a sample, please do so now!
  • Vaccinated? Please provide samples:
    • 6-months after your first vaccine. If the 6-month date has passed, provide your second sample now. If you provided a 6-month sample at the time you enrolled, then provide your 2nd sample at ~9 months.
    • 12-months after your first vaccine.
  • Getting a 3rd vaccine? You are welcome to provide an extra sample just prior to the vaccine so we can measure the vaccine-related change in antibody levels
  • Not vaccinated? Provide the 2nd and 3rd samples 6 and 12 months after your first blood test date. If you haven’t completed your first blood test please do so as soon as possible.
  • Need help in planning your blood test schedule? Contact your provincial study coordinator.
  • If you get COVID-19 please contact your provincial study coordinator and provide an additional blood sample after you have recovered.

Please remember to complete one questionnaire with each blood test. The questionnaires can be found in the study Participant Portal.

Unvaccinated paramedics who are currently enrolled in CORSIP and have lost their employment due to vaccine mandates are encouraged to remain in the study. If you need to update your email address (from work to your personal) please contact your provincial study coordinator.

Please update your vaccine status (including for the third vaccine) and any COVID-19 infections in your study Participant Portal. This data is very important to the study results and if it remains incomplete you may be contacted by a study team member to confirm it.

Have a question? Contact your provincial study coordinator:

Study Coordinators:
Alberta, Saskatchewan, Manitoba & Ontario:
Please contact David O’Neill at
British Columbia:
Please contact Tara Martin at

CORSIP is a study of paramedics in Canada. It aims to recruit 5000 paramedics who will complete surveys and collect blood samples three times over one year.

  • Your blood samples will help us identify how many paramedics have developed antibodies to the virus that causes COVID-19 and how long these antibodies last. These antibodies may be from infection or immunization. Subsequent samples will show if these antibodies are still present. You are eligible whether or not you have been vaccinated, however if you have not been vaccinated please provide your first blood sample prior to vaccination. We will share your personal lab results with you through this study portal!
  • Your survey responses will help us assess the occupational risk of working as a paramedic during the COVID-19 pandemic. We will further investigate workplace factors that increase or decrease paramedics' risk of developing COVID-19.

This project is funded by the COVID-19 Immunity Task Force, as part of a national effort to by the Government of Canada to track spread of the virus in priority populations in Canada.

To find out if you are eligible to participate click here

The study is currently recruiting and we need as many paramedics as possible!
Help us reach our goal of 5,000!

BC - By the numbers

1371 participants enrolled

ON - By the numbers

1352 participants enrolled

AB - 163 participants enrolled

SK - 91 participants enrolled

MB 137 participants enrolled

Total enrolled participants: 3114