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A Study to Evaluate the Immunogenicity and Safety of mRNA-1283 COVID-19 Variant-containing Formulations

Testing new COVID-19 vaccines for safety and immune response.

Recruiting
12 years and older
All
Phase 4

This study is testing a new type of COVID-19 vaccine called mRNA-1283, also known as mNEXSPIKE®. The goal is to see if this vaccine is safe and helps the body fight off new versions of the virus. People who can join the study are either 65 years or older, or between 12 to 64 years with certain health risks that make COVID-19 more dangerous for them. If you're interested, you should not have had COVID-19 recently and should not have recently been vaccinated against COVID-19.

  • The study involves receiving a new COVID-19 vaccine and follow-up visits.
  • Participants must use birth control if they can become pregnant.
  • Participants should not have had other vaccines recently, except the flu shot.

Before joining, participants will have a health check to ensure they meet all the study rules. This study helps us learn more about how vaccines can protect us from different COVID-19 variants.

Study details
    COVID-19

NCT07089706

ModernaTX, Inc.

2 August 2025

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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.
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