Testing for COVID-19 Infection Among Asymptomatic Health Care Workers

Thank you for you interested in our COVID-19 research studies among healthcare professionals. We are conducting several studies in this important population.

Sign up to participate:

If you are employed (or volunteering) in a healthcare facility and interested in enrolling in COVID-19 related research, please see below for a description of opportunities. If you have interest in participating in any of our studies, please complete the volunteer interest form.

This information will help us understand who is eligible for various studies we are conducting and the number of individuals with interest at a given facility so we can efficiently proceed with enrollment and screening administration. Note that we plan to conduct our research over the next year so even if you do not hear from us immediately, it is possible that we will contact you in the future with information about participation.

For Whom

Health care workers (broadly defined as anyone working or volunteering in a clinic, hospital or long-term care facility).


  1. Asymptomatic SARS-CoV-2 screening: This study tests whether people are currently infected with SARS-CoV-2. We ask participants to provide a nasopharyngeal swab and then respond to symptom surveys for ~6 months. If symptoms develop we might ask you to provide an additional swab. This study has concluded enrollment for the moment but future opportunities might arise. View a video description of the study
  2. Antibody seroprevalence study: This study tests whether people might have been previous infected with SARS-CoV-2. We ask participants to provide a small amount of blood for antibody testing. This study will begin enrollment soon. Sign up now.
  3. Biological and behavioral risk factor study: This study will administer on-line questionnaires for ~6-12 months to inquire about risk factors for the development of COVID-19. We will not provide testing in this study but our repeated, short, surveys will ask about diagnosis.


Depending on the study, participation could occur at healthcare facilities in the Minneapolis/St. Paul metro area, at drive-through testing stations in the Minneapolis/St. Paul metro area and/or via on-line surveys.


We want to understand the following questions:

  1. At different points in time during the pandemic, what proportion of health care workers are currently infected with SARS-CoV-2 but don’t have symptoms?
  2. As the pandemic progresses, what proportion of healthcare workers have been previously exposed to SARS-CoV-2?
  3. What are biological and behavioral risk factors for becoming infected with SARS-CoV-2 or having adverse COVID-19 outcomes?

Principal Investigator

ryan demmer

Ryan Demmer
Associate Professor
School of Public Health

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