New mRNA vaccine shows promise in preventing COVID-19

NCT ID NCT05815498

Completed ⭐️ VACCINE ⭐️ Sponsor: ModernaTX, Inc. Source: ClinicalTrials.gov ↗

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

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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.

COVID-19