One jab for two bugs: pfizer tests combo COVID-Flu vaccine in older adults

NCT ID NCT06237049

First seen Nov 01, 2025 · Last updated May 15, 2026 · Updated 28 times

Summary

This study tested whether a single injection combining a licensed COVID-19 vaccine and a licensed flu vaccine is safe and triggers a strong immune response. It involved 644 healthy adults aged 50 and older. The main goal was to check for side effects and measure antibody levels against both viruses. Results help determine if a combo shot could simplify annual vaccinations.

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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

Locations

  • ActivMed Practices & Research, LLC.

    Portsmouth, New Hampshire, 03801, United States

  • Bio-Kinetic Clinical Applications LLC DBA QPS-MO(Patient Screening Center)

    Springfield, Missouri, 65807, United States

  • Bio-Kinetic Clinical Applications, LLC dba QPS-MO

    Springfield, Missouri, 65802, United States

  • Bio-Kinetic Clinical Applications, LLD dba QPS-MO

    Springfield, Missouri, 65802, United States

  • Centricity Research Columbus Ohio Multispecialty

    Columbus, Ohio, 43213, United States

  • Charlottesville Medical Research

    Charlottesville, Virginia, 22911, United States

  • Clinical Research Associates Inc

    Nashville, Tennessee, 37203, United States

  • Clinical Research Atlanta

    Stockbridge, Georgia, 30281, United States

  • Clinical Research Consulting

    Milford, Connecticut, 06460, United States

  • Clinical Site Partners, LLC dba Flourish Research

    Winter Park, Florida, 32789, United States

  • Clinical Trials of Texas, LLC

    San Antonio, Texas, 78229, United States

  • DM Clinical Research - Bellaire

    Houston, Texas, 77081, United States

  • DM Clinical Research - MDC

    Tomball, Texas, 77375, United States

  • DM Clinical Research- Cyfair

    Houston, Texas, 77065, United States

  • Diablo Clinical Research, Inc.

    Walnut Creek, California, 94598, United States

  • East-West Medical Research Institute

    Honolulu, Hawaii, 96814, United States

  • GW Medical Faculty Associates

    Washington D.C., District of Columbia, 20037, United States

  • GW Vaccine Research Unit

    Washington D.C., District of Columbia, 20037, United States

  • Headlands Research Orlando

    Orlando, Florida, 32819, United States

  • IMA Clinical Research San Antonio

    San Antonio, Texas, 78229, United States

  • Indago Research & Health Center, Inc

    Hialeah, Florida, 33012, United States

  • JEM Research Institute

    Atlantis, Florida, 33462, United States

  • Las Vegas Clinical Trials

    Las Vegas, Nevada, 89030, United States

  • Las Vegas Clinical Trials

    North Las Vegas, Nevada, 89030, United States

  • Optimal Research

    Melbourne, Florida, 32934, United States

  • Optimal Research

    Peoria, Illinois, 61614, United States

  • Orange County Research Center

    Lake Forest, California, 92630, United States

  • Orange County Research Center

    Tustin, California, 92780, 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.