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Participant Information

A clinical research study to evaluate an investigational vaccine for the prevention of COVID-19 in adults is now enrolling.

The Study has 3 Parts

Screening Period
(up to 14 days)

You will visit the study center to
see if the study is right for you,
learn more about it, and decide
whether you want to take part.
Study treatment
(4 weeks)

You will visit the study center
2 or 3 times for study assessments.
At 2 of these visits, you will receive
the study injection (either the
investigational vaccine or placebo).
The study center staff will
contact you by phone 7 days
after each study injection.
Follow-Up Period
(about 2 years)

You will visit the study center up
to 6 times for study assessments
after you have received the study
injections. Additional visits may
be required if you develop signs
of COVID-19 during the study.

Why is the AZD1222 COVID-19 VACCINE Study important?

There is currently no approved vaccine for COVID-19. In this study, participants will be randomly assigned (by chance) to receive 2 injections of either the investigational vaccine or placebo (4 weeks apart).

A placebo looks like the investigational vaccine but contains no active vaccine. There is twice as much chance of receiving the investigational vaccine than of receiving the placebo.

What will the AZD1222 COVID-19 VACCINE Study involve?

If you take part, you will be in the AZD1222 COVID-19 VACCINE Study for about 2 years. You will need to:
• attend all study visits
• be willing to receive regular contact (by phone, email, and/or text)
• notify the study team if you have any signs or symptoms of COVID-19.The

What else do I need to consider?

• The study team will explain the possible benefits and risks of the study.
• You do not have to take part in the study if you don’t want to.
• If you choose to take part in the study, you can stop participating at any time.
• The study injections and study-related tests will be provided at no cost to you.
• A team of doctors and nurses will monitor your health carefully during the study.

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