New c. diff vaccine shows promise in preventing severe diarrhea

NCT ID NCT05805826

First seen Nov 12, 2025 · Last updated May 15, 2026 · Updated 20 times

Summary

This study tests new versions of a vaccine to prevent severe diarrhea caused by the C. diff germ. Healthy adults aged 50 and older who have never had a C. diff infection can join. The goal is to see if the new vaccine formulations produce a strong immune response and are safe.

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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

  • Alliance for Multispecialty Research, LLC

    Doral, Florida, 33172, United States

  • Alliance for Multispecialty Research, LLC

    Wichita, Kansas, 67226, United States

  • Anaheim Clinical Trials, LLC

    Anaheim, California, 92801, United States

  • BRCR Medical Center Inc.

    Plantation, Florida, 33322, United States

  • Benchmark Research

    Austin, Texas, 78705, United States

  • CTI Clinical Research Center

    Cincinnati, Ohio, 45212, United States

  • Charisma Medical and Research Center

    Miami Lakes, Florida, 33014, United States

  • Clinical Research Trials of Florida

    Tampa, Florida, 33607, United States

  • DBC Research USA

    Pembroke Pines, Florida, 33029, United States

  • Dynamed Clinical Research, LP d/b/a DM Clinical Research

    Tomball, Texas, 77375, United States

  • Great Lakes Clinical Trials - Ravenswood

    Chicago, Illinois, 60640, United States

  • HOPE Research Institute

    Phoenix, Arizona, 85032, United States

  • Indago Research & Health Center, Inc

    Hialeah, Florida, 33012, United States

  • Miami Clinical Research

    Miami, Florida, 33155, United States

  • NYU Langone Health

    New York, New York, 10016, United States

  • New Horizon Research Center

    Miami, Florida, 33165, United States

  • Prism Research LLC dba Nucleus Network

    Saint Paul, Minnesota, 55114, United States

  • Private Practice - Dr. Hector Fabregas

    Pembroke Pines, Florida, 33026, United States

  • Qcare Site Services Inc. d/b/a Avacare

    Durham, North Carolina, 27703, United States

  • Research Centers of America

    Hollywood, Florida, 33024, United States

  • Rochester Clinical Research, Inc.

    Rochester, New York, 14609, United States

  • Washington University

    St Louis, Missouri, 63130, United States

  • Washington University School of Medicine

    St Louis, Missouri, 63110, United States

Conditions

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