New mRNA flu shots show promise in large adult trial

NCT ID NCT07121192

Completed ⭐️ VACCINE ⭐️ Sponsor: GlaxoSmithKline Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested new mRNA-based seasonal flu vaccines in 776 healthy adults aged 18 and older. The goal was to see how safe the vaccines are and how well they boost the immune system. Researchers measured side effects and immune responses to find the best vaccine candidate.

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Conditions

The condition(s) this trial relates to.

Infections viral infectious disease influenza prevention target

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

INFLUENZA, HUMAN

Contacts and locations

Locations

GSK Investigational Site

Anniston, Alabama, 36207, United States
GSK Investigational Site

Fair Oaks, California, 95628, United States
GSK Investigational Site

San Diego, California, 92120, United States
GSK Investigational Site

San Diego, California, 92123, United States
GSK Investigational Site

Walnut Creek, California, 94598, United States
GSK Investigational Site

Hialeah, Florida, 33012, United States
GSK Investigational Site

Jupiter, Florida, 33458, United States
GSK Investigational Site

Miami, Florida, 33186, United States
GSK Investigational Site

Stockbridge, Georgia, 30281, United States
GSK Investigational Site

Valparaiso, Indiana, 46383, United States
GSK Investigational Site

Lenexa, Kansas, 66219, United States
GSK Investigational Site

Springfield, Massachusetts, 01103, United States
GSK Investigational Site

Carson City, Nevada, 89706, United States
GSK Investigational Site

Rochester, New York, 14609, United States
GSK Investigational Site

Greensboro, North Carolina, 27408, United States
GSK Investigational Site

Cleveland, Ohio, 44122, United States
GSK Investigational Site

North Charleston, South Carolina, 29405, United States
GSK Investigational Site

Austin, Texas, 78705, United States
GSK Investigational Site

DeSoto, Texas, 75115, United States
GSK Investigational Site

Fort Worth, Texas, 76135, United States
GSK Investigational Site

Newport News, Virginia, 23606, United States
GSK Investigational Site

Seattle, Washington, 98104, United States

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