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New mRNA vaccine shows promise in preventing COVID-19

NCT ID NCT05815498

First seen May 20, 2026 · Last updated May 22, 2026 · Updated 1 time

Summary

This study tested a new COVID-19 vaccine (mRNA-1283) against an already-approved vaccine (mRNA-1273) in over 13,500 people aged 12 and older. The goal was to see if the new vaccine provides better protection against COVID-19. Researchers measured immune responses and tracked any side effects to compare safety and effectiveness.

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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

  • Accel Clinical Research

    Lakeland, Florida, 33803, United States

  • Accel Research Sites

    Largo, Florida, 33709, United States

  • Accel Research Sites Lake Oconee

    Eatonton, Georgia, 31024, United States

  • Accel Research Sites- Achieve Clinical Research

    Vestavia Hills, Alabama, 35216, United States

  • Accellacare North London

    Northwood, United Kingdom

  • Acclaim Clinical Research

    San Diego, California, 92120, United States

  • Acclaim Clinical Research

    Maitland, Florida, 32751, United States

  • Alliance for Multispeciality Research - Miami

    Coral Gables, Florida, 33134, United States

  • Alliance for Multispecialty Research, LLC

    El Dorado, Kansas, 67042, United States

  • Alliance for Multispecialty Research, LLC- Wichita

    Wichita, Kansas, 67207, United States

  • Alliance for Multispecialty Research-Lexington

    Lexington, Kentucky, 40509, United States

  • Anaheim Clinical Trials, LLC

    Anaheim, California, 92801, United States

  • Arakawa Family Clinic

    Nagano, Japan

  • Artemis Institute for Clinical Research

    Riverside, California, 92503, United States

  • Artemis Institute for Clinical Research

    San Diego, California, 92103, United States

  • Atlanta Clinical Research Center

    Atlanta, Georgia, 30342, United States

  • Barnsley Hospital

    Barnsley, United Kingdom

  • Barts Health NHS Trust

    London, United Kingdom

  • Baybol Research Institute

    Chamblee, Georgia, 30341, United States

  • Be Well Clinical Studies

    Round Rock, Texas, 78681, United States

  • Beautiful Minds Clinical Research Center

    Cutler Bay, Florida, 33157, United States

  • Benchmark Research

    Colton, California, 92324, United States

  • Benchmark Research

    Sacramento, California, 95864, United States

  • Benchmark Research

    Covington, Louisiana, 70006, United States

  • Benchmark Research

    Metairie, Louisiana, 70006, United States

  • Benchmark Research

    Austin, Texas, 78705, United States

  • Benchmark Research

    Fort Worth, Texas, 76135, United States

  • Bioluminux Clinical Research

    Milton Keynes, United Kingdom

  • Bradford Teaching Hospitals NHS Foundation Trust - Bradford

    Bradford, United Kingdom

  • Brigham and Women's Hospital

    Boston, Massachusetts, 02115, United States

  • CCT research/ Methodist Physicians Clinic- Prairie Fields

    Fremont, Nebraska, 68025, United States

  • CPS Research

    Glasgow, United Kingdom

  • CTI Clinical Research Center

    Cincinnati, Ohio, 45212, United States

  • Carolina Health Specialists

    Myrtle Beach, South Carolina, 29572, United States

  • CenExel - CITrials

    Riverside, California, 82506, United States

  • CenExel Research Centers of America

    Hollywood, Florida, 33024, United States

  • Centennial Medical Group

    Eldridge, Maryland, 21075, United States

  • Centricity Research

    Columbus, Georgia, 31904, United States

  • Centricity Research Pointe-Claire

    Pointe-Claire, Quebec, H9R 4S3, Canada

  • Centricity Research Toronto Manna Multispecialty

    Toronto, Ontario, M9W 4L6, Canada

  • Chandler Clinical Trials

    Chandler, Arizona, 85224, United States

  • Chemidox Clinical Trials

    Lancaster, California, 93534, United States

  • Chicago Clinical Research Institute

    Chicago, Illinois, 60607, United States

  • Clinical Neuroscience Solutions (CNS Healthcare site)

    Orlando, Florida, 32801, United States

  • Clinical Neuroscience Solutions, Inc

    Jacksonville, Florida, 32256, United States

  • Clinical Research Associates, Inc.

    Nashville, Tennessee, 37203, United States

  • Clinical Research Atlanta/Headlands

    Stockbridge, Georgia, 30281, United States

  • Clinical Research Consortium

    Tempe, Arizona, 85281, United States

  • Clinical Research Institute

    Minneapolis, Minnesota, 55402, United States

  • Clinical Research Partners LLC

    DeLand, Florida, 32720, United States

  • Clinical Research Partners, LLC

    Richmond, Virginia, 23226, United States

  • Clinical Trials of Florida

    Miami, Florida, 33186, United States

  • Clinical Trials of Texas, Inc.

    San Antonio, Texas, 78229, United States

  • Clinique spécialisée en allergie

    Québec, G1V 4W2, Canada

  • Coastal Carolina Research Center

    North Charleston, South Carolina, 29464, United States

  • Cope Family Medicine

    Bountiful, Utah, 84010, United States

  • DELRICHT RESEARCH at ZOMNIR FAMILY MEDICINE

    McKinney, Texas, 75072, United States

  • DM Clinical Research

    Brookline, Massachusetts, 02445, United States

  • DM Clinical Research

    Philadelphia, Pennsylvania, 19107, United States

  • DM Clinical Research

    Houston, Texas, 77065, United States

  • DM Clinical Research

    Houston, Texas, 77081, United States

  • DM Clinical Research

    Sugar Land, Texas, 77478, United States

  • DM Clinical Research

    Tomball, Texas, 77375, United States

  • Del Sol research Management LLC.

    Tucson, Arizona, 85715, United States

  • Delricht Clinical Research

    Prairieville, Louisiana, 70769, United States

  • Delricht Research

    Atlanta, Georgia, 30329, United States

  • Delricht Research

    New Orleans, Louisiana, 70115, United States

  • Delricht Research

    Gulfport, Mississippi, 39503, United States

  • Delricht Research

    Springfield, Missouri, 65807, United States

  • Delricht Research

    Town and Country, Missouri, 63017, United States

  • Delricht Research

    Tulsa, Oklahoma, 74133, United States

  • Delricht Research

    Charleston, South Carolina, 29407, United States

  • Delricht Research

    Hendersonville, Tennessee, 37075, United States

  • Diagnostics Research Group

    San Antonio, Texas, 78229, United States

  • Dojinkinenkai Meiwa Hospital

    Tokyo, Japan

  • Dorset Clinical Research Centre (Bournemouth Hospital)

    Bournemouth, United Kingdom

  • Dr. Anil K. Gupta Medicine Professional Corporation

    Toronto, Ontario, M9V 4B4, Canada

  • Egin Research

    London, United Kingdom

  • Elite Research Network

    Decatur, Georgia, 30030, United States

  • Empire Clinical Research

    Pomona, California, 91786, United States

  • Encore Research Group-Jacksonville Center for Clinical Research

    Jacksonville, Florida, 32216, United States

  • FRC - CCT Research

    Phoenix, Arizona, 85244, United States

  • Floridian Clinical Research

    Miami Lakes, Florida, 33016, United States

  • GST NHS Found

    Preston, United Kingdom

  • Georgia Clinic, PC/CCT Research

    Norcross, Georgia, 30092, United States

  • Global Health Research Center, Inc.

    Miami Lakes, Florida, 33016, United States

  • Global Health Research Center, Inc.

    Tampa, Florida, 33615, United States

  • Gloucestershire Hospitals NHS Foundation Trust - Cheltenham

    Gloucester, United Kingdom

  • Great Lakes Clinical Trials

    Chicago, Illinois, 60640, United States

  • Great Lakes Research Institute

    Southfield, Michigan, 48075, United States

  • Guys and St. Thomas NHS Foundation Trust

    London, United Kingdom

  • Hamilton Medical Research group

    Hamilton, Ontario, L8M 1K7, Canada

  • Hammersmith Medicines Research (HMR)

    London, United Kingdom

  • Headlands Research Brownsville

    Brownsville, Texas, 78526, United States

  • Headlands Research Orlando

    Orlando, Florida, 32819, United States

  • Headlands Research Sarasota

    Scottsdale, Arizona, 85260, United States

  • Health Awareness INC

    Jupiter, Florida, 33458, United States

  • Health Research of Hampton Roads, Inc.

    Newport News, Virginia, 23606, United States

  • Hillcrest Medical Research, LLC

    DeLand, Florida, 32720, United States

  • IMA Clinical Research

    Warren Township, New Jersey, 07059, United States

  • IMA Clinical Research

    Albuquerque, New Mexico, 87109, United States

  • IMA Clinical Research

    New York, New York, 10036, United States

  • Innovation Medical Research Center

    Palmetto Bay, Florida, 33157, United States

  • Intermed groupe santé

    Chicoutimi, Quebec, G7H 7Y8, Canada

  • J. Lewis Research, Inc. / Foothill Family Clinic South

    Salt Lake City, Utah, 84121, United States

  • JBR Clinical Research

    Salt Lake City, Utah, 84107, United States

  • Johnson County Clin-Trials, Inc (JCCT)

    Lenexa, Kansas, 66219, United States

  • Koseikai Yotsubashi Clinic - Internal Medicine

    Osaka, Japan

  • Lakeside Healthcare

    Corby, United Kingdom

  • Las Vegas Clinical Trials

    North Las Vegas, Nevada, 89030, United States

  • Layton Medical Centre

    Blackpool, United Kingdom

  • Long Beach Clinical Trials

    Long Beach, California, 90806, United States

  • Lynn Institute of Denver

    Aurora, Colorado, 80012, United States

  • Lynn Institute of the Ozarks

    Little Rock, Arkansas, 72204, United States

  • Manchester University NHS Foundation Trust

    Manchester, United Kingdom

  • Manna Research Inc.

    Pointe-Claire, Quebec, H9R 4S3, Canada

  • Marvel Clinical Research 002, LLC

    Huntington Beach, California, 92647, United States

  • MedPharmics

    Covington, Louisiana, 70433, United States

  • Medical Corporation Asbo Tokyo Asbo Clinic

    Tokyo, Japan

  • Medical Corporation of Yamazaki Neurotology, Rhinolaryngology Clinic

    Sapporo, Japan

  • Medicor Research Inc.

    Greater Sudbury, Ontario, P3C 1X3, Canada

  • Meridian Clinical Research

    Baton Rouge, Louisiana, 70809, United States

  • Meridian Clinical Research, LLC

    Lincoln, Nebraska, 68510, United States

  • Metropolitan Clinic - Internal Medicine

    Tokyo, Japan

  • Milestone Research Inc.

    London, Ontario, N5W 6A2, Canada

  • Monroe Biomedical Research

    Monroe, North Carolina, 28112, United States

  • Montana Medical Research, Inc

    Missoula, Montana, 59808, United States

  • Motomachi Takatsuka Naika Clinic - Internal Medicine

    Kanagawa, Japan

  • Mountain View Ogden Clinic/CCT Research

    Pleasant View, Utah, 84404, United States

  • NHS Greater Glasgow & Clyde

    Glasgow, United Kingdom

  • National Center for Global Health and Medicine

    Tokyo, Japan

  • Nature Coast Clinical Research

    Crystal River, Florida, 34429, United States

  • Nature Coast Clinical Research

    Inverness, Florida, 34452, United States

  • Newcastle University - Institute of Cellular Medicine (ICM)

    Newcastle, United Kingdom

  • Noble Clinical Research, LLC

    Tucson, Arizona, 85704, United States

  • North Wales Clinical Research Centre

    Wrexham, United Kingdom

  • Nottingham University Hospitals NHS Trust - Queens Medical Centre (QMC) Campus

    Nottingham, United Kingdom

  • Optimal Research

    Huntsville, Alabama, 35802, United States

  • Palm Beach Research Center

    West Palm Beach, Florida, 33409, United States

  • PanAmerican Clinical Research, LLC

    Brownsville, Texas, 78520, United States

  • Panthera Biopartners - Enfield

    London, United Kingdom

  • Panthera Biopartners - Glasgow - multispeciality

    Glasgow, United Kingdom

  • Panthera Biopartners - Manchester - multispeciality

    Rochdale, United Kingdom

  • Panthera Biopartners - Sheffield - multispeciality

    Sheffield, United Kingdom

  • Panthera Biopartners Preston

    Preston, United Kingdom

  • Papillon Research Centre

    Papillion, Nebraska, 68046, United States

  • Peninsula Research Associates

    Rolling Hills Estates, California, 90274, United States

  • Phoenix Clinical Research LLC

    Phoenix, Arizona, 85014, United States

  • Pier Health Group

    Weston-super-Mare, United Kingdom

  • Pines Care Research Center, Inc.

    Pembroke Pines, Florida, 33024, United States

  • Precision Clinical Research

    Sunrise, Florida, 33351, United States

  • Public Health Association.Inc

    Aichi, Japan

  • Q&T Research Sherbrooke Inc.

    Sherbrooke, Quebec, J1J 2G2, Canada

  • Queen Elizabeth University Hospital

    Glasgow, United Kingdom

  • Red Maple Trials Inc.

    Ottawa, Ontario, K1H1E4, Canada

  • Research Your Health

    Plano, Texas, 75093, United States

  • Richford Gate Medical Practice

    London, United Kingdom

  • Rochester Clinical Research, Inc.

    Rochester, New York, 14609, United States

  • Rotherham Doncaster and South Humber NHS Foundation Trust

    Doncaster, United Kingdom

  • Royal Devon & Exeter Hospital

    Exeter, United Kingdom

  • Royal Free London NHS Foundation Trust

    London, United Kingdom

  • Royal United Hospital Bath NHS Trust - Royal United Hospital

    Bath, United Kingdom

  • Royal Victoria Infirmary

    Sheffield, United Kingdom

  • Santos Research Center CORP

    Tampa, Florida, 33615, United States

  • Shinei Medical Healthcare Clinic

    Tokyo, Japan

  • Southampton General Hospital - Portsmouth Research Hub

    Portsmouth, United Kingdom

  • Southampton University Hospital NHS Foundation Trust

    Southampton, United Kingdom

  • Spartanburg Medical Research

    Spartanburg, South Carolina, 29303, United States

  • St Georges Healthcare NHS Trust - University of London

    London, United Kingdom

  • Stemax Consult Healthcare Services Ltd

    Milton Keynes, United Kingdom

  • Summit Research Headlands LLC

    Portland, Oregon, 97210, United States

  • Suncoast Research Associates, LLC

    Miami, Florida, 33713, United States

  • Suncoast Research Associates, LLC

    Pembroke Pines, Florida, 33324, United States

  • Suncoast Research Group, LLC

    Miami, Florida, 33135, United States

  • Sundance Clinical Research, LLC

    St Louis, Missouri, 63141, United States

  • Sweet Hope Research Specialty, Inc.

    Hialeah, Florida, 33016, United States

  • Synexus

    Pinellas Park, Florida, 33781, United States

  • Synexus Clinical Research US, Inc

    Anderson, South Carolina, 29621, United States

  • Tekton Research - Beaumont

    Beaumont, Texas, 77706, United States

  • Tekton Research - Fort Collins

    Fort Collins, Colorado, 80525, United States

  • Tekton Research -San Antonio

    San Antonio, Texas, 78240, United States

  • Tekton Research Inc

    Wichita, Kansas, 67218, United States

  • Tekton Research Inc

    Moore, Oklahoma, 73160, United States

  • Tekton Research Inc

    Austin, Texas, 78745, United States

  • Tekton Research, Inc- Longmont Center

    Longmont, Colorado, 80501, United States

  • Tekton Research- Edmond

    Edmond, Oklahoma, 73013, United States

  • Tekton Research- Yukon

    Yukon, Oklahoma, 73099, United States

  • Tenjin Sogo Clinic

    Fukuoka, Japan

  • The Center for Pharmaceutical Research

    Kansas City, Missouri, 64114, United States

  • Trial Management Associates, LLC

    Wilmington, North Carolina, 28403, United States

  • University Hospitals Plymouth NHS Trust

    Plymouth, United Kingdom

  • University Hospitals of Leicester-Leicester Royal Hospital

    Leicester, United Kingdom

  • University of Dundee - NHS Tayside - Ninewells Hospital & Me

    Dundee, United Kingdom

  • Velocity Clinical Research

    La Mesa, California, 91942, United States

  • Velocity Clinical Research

    Meridian, Idaho, 83642, United States

  • Velocity Clinical Research

    Grand Island, Nebraska, 68803, United States

  • Velocity Clinical Research

    Omaha, Nebraska, 68134, United States

  • Velocity Clinical Research

    Cincinnati, Ohio, 45242, United States

  • Velocity Clinical Research

    Cleveland, Ohio, 44122, United States

  • Velocity Clinical Research

    Columbia, South Carolina, 29204, United States

  • Velocity Clinical Research

    Portsmouth, Virginia, 23703, United States

  • Velocity Clinical Research

    North London, United Kingdom

  • Velocity Clinical Research - Cincinnati

    Cincinnati, Ohio, 45246, United States

  • Velocity Clinical Research Denver

    Denver, Colorado, 80209, United States

  • Velocity Clinical Research High Wycombe

    High Wycombe, United Kingdom

  • Velocity Clinical Research Huntington Park

    Huntington Park, California, 90255, United States

  • Velocity Clinical Research Valparaiso

    Valparaiso, Indiana, 46383, United States

  • Velocity Clinical Research, Banning

    Banning, California, 92220, United States

  • Velocity Clinical Research, Greenville

    Greenville, South Carolina, 29615, United States

  • Velocity Clinical Research, Hallandale Beach

    Hallandale, Florida, 33009, United States

  • Velocity Clinical Research, Inc

    Cincinnati, Ohio, 45219, United States

  • Velocity Clinical Research, Medford

    Medford, Oregon, 97504, United States

  • Velocity Clinical Research, Syracuse

    East Syracuse, New York, 13057, United States

  • Velocity Clinical Research- Chula Vista

    Chula Vista, California, 91911, United States

  • Velocity Clinical Research- New Mexico

    Albuquerque, New Mexico, 87102, United States

  • Velocity Clinical Research- Spartanburg

    Spartanburg, South Carolina, 29303, United States

  • Velocity Clinical Research- Westlake

    Los Angeles, California, 90057, United States

  • Velocity Clinical Research-Anderson

    Anderson, South Carolina, 29621, United States

  • Velocity Clinical Research-North Hollywood

    North Hollywood, California, 90036, United States

  • Ventavia Research Group

    Fort Worth, Texas, 76104, United States

  • Ventavia Research Group

    Keller, Texas, 76248, United States

  • Versailles Family Medicine

    Versailles, Kentucky, 40383, United States

  • Wansford and Kings Cliffe Practice

    Peterborough, United Kingdom

  • Warrington and Halton Teaching hospitals NHS Foundation Trust - Halton General Hospital

    Runcorn, United Kingdom

  • Western General Hospital

    Edinburgh, United Kingdom

  • Weymouth Research Hub

    Weymouth, United Kingdom

  • Winterberry Family Medicine

    Stoney Creek, Ontario, L8J0B6, Canada

  • Wr-Crcn, Llc

    Las Vegas, Nevada, 89113, United States

  • Yamasaki Family Clinic - internal medicine

    Hyōgo, Japan

  • Zenos Clinical Research

    Dallas, Texas, 75230, United States

Conditions

Explore the condition pages connected to this study.