New mRNA flu shots pass safety check in 1,200-Person trial

NCT ID NCT06436703

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

First seen Jan 11, 2026 · Last updated May 24, 2026 · Updated 19 times

Summary

This study tested new modified RNA (modRNA) flu vaccines in 1,202 healthy adults aged 18 and older. The goal was to see if the vaccines are safe and how well they trigger the body's immune defenses. Participants received either a modRNA vaccine or an approved flu shot, and were followed for about 6 months. The study is now complete, and results will help decide if these vaccines should move to larger trials.

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This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Contacts and locations

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Locations

Alliance for Multispecialty Research, LLC

Mobile, Alabama, 36608, United States
Alliance for Multispecialty Research, LLC

New Orleans, Louisiana, 70119, United States
Alliance for Multispecialty Research, LLC

Kansas City, Missouri, 64114, United States
Alliance for Multispecialty Research, LLC

Norfolk, Virginia, 23502, United States
Anaheim Clinical Trials, LLC

Anaheim, California, 92801, United States
Artemis Institute for Clinical Research

San Diego, California, 92103, United States
Charlottesville Medical Research

Charlottesville, Virginia, 22911, United States
Clinical Neuroscience Solutions, Inc.

Orlando, Florida, 32801, United States
Clinical Research Consulting

Milford, Connecticut, 06460, United States
Clinical Research Professionals

Chesterfield, Missouri, 63005, United States
Clinical Trials of Texas, LLC

San Antonio, Texas, 78229, United States
Clinical Trials of Texas, LLC dba Flourish Research

San Antonio, Texas, 78229, United States
DM Clinical Research - Philadelphia

Philadelphia, Pennsylvania, 19107, United States
Diablo Clinical Research, Inc.

Walnut Creek, California, 94598, United States
Duke Vaccine and Trials Unit

Durham, North Carolina, 27703, United States
Dynamed Clinical Research, LP d/b/a DM Clinical Research

Tomball, Texas, 77375, United States
East-West Medical Research Institute

Honolulu, Hawaii, 96814, United States
Headlands Horizons LLC

Brownsville, Texas, 78526, United States
Headlands Research - Scottsdale

Scottsdale, Arizona, 85260, United States
Headlands Research Orlando

Orlando, Florida, 32819, United States
Indago Research & Health Center, Inc

Hialeah, Florida, 33012, United States
J. Lewis Research, Inc. / Foothill Family Clinic

Salt Lake City, Utah, 84109, United States
J. Lewis Research, Inc. / Foothill Family Clinic South

Salt Lake City, Utah, 84121, United States
M3 Wake Research, Inc.

Raleigh, North Carolina, 27612, United States
Orange County Research Center

Lake Forest, California, 92630, United States
Palm Springs Community Health Center

Miami Lakes, Florida, 33014, United States
Prism Research LLC dba Nucleus Network

Saint Paul, Minnesota, 55114, United States
Qps-Mra, Llc

South Miami, Florida, 33143, United States
Research Centers of America

Hollywood, Florida, 33024, United States
Research Centers of America ( Hollywood )

Hollywood, Florida, 33024, United States
Rochester Clinical Research, LLC

Rochester, New York, 14609, United States
SMS Clinical Research

Mesquite, Texas, 75149, United States

Conditions

Explore the condition pages connected to this study.

INFLUENZA, HUMAN