CASCADIA Study logo

You’re invited to join a research study about COVID-19

The CASCADIA study will help us learn more about how often COVID-19 occurs among adults and children. The study will also help us learn how well COVID-19 vaccines work to prevent COVID-19 infections and illness.

Screen for Eligibilty

Who Can Join?

The CASCADIA study is inviting people to join who:

  • Are 6 months to 49 years of age
  • Live in or around Portland, Oregon or Seattle, Washington
  • Have or have not gotten a COVID vaccine

You can choose to sign up yourself (if you are an adult), your whole household, or some or all your children (even if adults do not take part).

If you are interested in joining or signing your child(ren) up for the CASCADIA study, the first step is to answer questions to find out if you are eligible.

Screen for Eligibilty


The study is being done by Kaiser Permanente Northwest Center for Health Research (CHR), the University of Washington (UW), and Seattle Children's Hospital (SCH), in partnership with the Centers for Disease Control and Prevention (CDC).

If you are eligible and decide to join the Cascadia study, your participation could last up to 4 years.

Study activities will include the following:

  • When you join: Complete an online questionnaire and provide a blood sample at a study clinic
  • Weekly: Collect and send nasal swabs and answer brief symptom survey questions
  • Monthly: Complete online surveys about yourself or your child/household
  • Collect extra nasal swabs if you get sick and provide us with information about symptoms
  • Annually: Provide a blood sample at a study clinic
  • Optional: Blood draws if you become sick with COVID-19 or get a COVID vaccine

We will test your swab for SARS-CoV-2 (the virus that causes COVID-19) and other viruses that cause a similar illness. We will provide test results every week.

Yes, for being in the study you will receive:

  • $25 for completing the enrollment visit and blood collection
  • $25 for each blood draw
  • $10 for every month you complete weekly surveys and nasal swabs (can be up to $120 per year)
  • $20 for each set of illness swabs

If you are a University of Washington participant, we will also provide $25 for transportation and parking costs for research study visits.

Joining the study is easy! First, go here to see if you are eligible:

Screen for Eligibilty

If you have any questions, please contact us:

In the Portland, OR area: email or call 503-335-6350.

In the Seattle, WA area: email or call 206-543-1923.