Image

A Study to Learn About The COVID-19 (Study) Vaccine (Called COMIRNATY) in People That Are Less Than 21 Years Old.

Exploring COVID-19 vaccine effects in people under 21.

Recruiting
20 years and younger
All
Phase 4
  • Simplified description (AI rewritten)
  • Technical description (Original)

This study is looking at the safety and effects of a COVID-19 vaccine called COMIRNATY in people younger than 21 years old. The main goal is to see if the vaccine has any connection to heart problems like myocarditis (swelling of the heart muscle) or pericarditis (swelling of the lining around the heart). The study will compare people who have these heart problems after getting the vaccine with those who have them due to COVID-19. Participants will be in the study for up to 5 years and will have heart check-ups and follow-up visits. To join, you must have symptoms within 7 days of getting the vaccine, be evaluated at a hospital, and meet certain health criteria.

  • Participation is for up to 5 years with regular heart check-ups.
  • You must be under 21 years old and have heart symptoms soon after vaccination.
  • Your health will be compared to those with heart issues from COVID-19.
Print
Study details
    Myocarditis

NCT05295290

Pfizer

14 June 2025

Contact a study center
Step 1 Get in touch with the nearest study center
We have submitted the contact information you provided to the research team at {{SITE_NAME}}. A copy of the message has been sent to your email for your records.
Would you like to be notified about other trials? Sign up for Patient Notification Services.
Sign up

Send a message

Enter your contact details to connect with study team

Investigator Avatar

Primary Contact

  Other languages supported:

First name*
Last name*
Email*
Phone number*
Race
Ethnicity
Other language

FAQs

Learn more about clinical trials

What is a clinical trial?

A clinical trial is a study designed to test specific interventions or treatments' effectiveness and safety, paving the way for new, innovative healthcare solutions.

Why should I take part in a clinical trial?

Participating in a clinical trial provides early access to potentially effective treatments and directly contributes to the healthcare advancements that benefit us all.

How long does a clinical trial take place?

The duration of clinical trials varies. Some trials last weeks, some years, depending on the phase and intention of the trial.

Do I get compensated for taking part in clinical trials?

Compensation varies per trial. Some offer payment or reimbursement for time and travel, while others may not.

How safe are clinical trials?

Clinical trials follow strict ethical guidelines and protocols to safeguard participants' health. They are closely monitored and safety reviewed regularly.
Add a private note
  • abc Select a piece of text.
  • Add notes visible only to you.
  • Send it to people through a passcode protected link.