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Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Evaluate Efficacy, Safety, and Immunogenicity of mRNA-1273 Vaccine in Adults Aged 18 Years and Older to Prevent COVID-19

ClinicalTrials.gov ID: NCT04470427

Public ClinicalTrials.gov record NCT04470427. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Sep 3, 2026, 9:24 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Phase 3, Randomized, Stratified, Observer-Blind, Placebo-Controlled Study to Evaluate the Efficacy, Safety, and Immunogenicity of mRNA-1273 SARS-CoV-2 Vaccine in Adults Aged 18 Years and Older

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

The mRNA-1273 vaccine is being developed to prevent COVID-19, the disease resulting from Severe Acute Respiratory Syndrome coronavirus (SARS-CoV-2) infection. The study is designed to primarily evaluate the efficacy, safety, and immunogenicity of mRNA-1273 to prevent COVID-19 for up to 2 years after the second dose of mRNA-1273.

Study identification

NCT ID
NCT04470427
Recruitment status
Completed
Study type
Interventional
Phase
Phase 3
Lead sponsor
ModernaTX, Inc.
Industry
Enrollment
30,415 participants

Conditions and interventions

Conditions

Interventions

Biological

Eligibility (public fields only)

Age range
18 Years and older
Sex
All
Healthy volunteers
Accepts healthy volunteers

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Jul 26, 2020
Primary completion
Dec 28, 2022
Completion
Dec 28, 2022
Last update posted
Mar 20, 2024

2020 – 2022

United States locations

U.S. sites
100
U.S. states
31
U.S. cities
82
Facility City State ZIP Site status
Ascension St. Vincent Birmingham Birmingham Alabama 35205
Synexus Clinical Research US, Inc. - Birmingham Birmingham Alabama 35211
Hope Research Institute Chandler Arizona 85224
Synexus Clinical Research US, Inc. - Phoenix West Glendale Arizona 85306
Hope Research Institute Peoria Arizona 85018
Hope Research Institute Phoenix Arizona 85018
Quality of Life Medical and Research Center Tucson Arizona 85712
Baptist Health Center for Clinical Research Little Rock Arkansas 72205
Advanced Clinical Research - Rancho Paseo Banning California 92220
University of California San Diego La Jolla California 92093
eStudySite - La Mesa La Mesa California 91942
UCLA Vine Street Clinic CRS Los Angeles California 90038
VA Greater Los Angeles Healthcare (veterans only) Los Angeles California 90073
Paradigm Clinical Research Institute Inc Redding California 96001
Benchmark Research - Sacramento Sacramento California 95864
Medical Center For Clinical Research - M3 Wake Research San Diego California 92108
University of Colorado Hospital Aurora Colorado 80045
Lynn Institute of The Rockies Colorado Springs Colorado 80918
George Washington University Washington D.C. District of Columbia 20037
Accel Research Site DeLand Florida 32720
Research Centers of America Hollywood Florida 33024
Jacksonville Center for Clinical Research Jacksonville Florida 32216
Synexus - Optimal Research - Melbourne Melbourne Florida 32934
Suncoast Research Group Miami Florida 33135
University of Miami Miami Florida 33136
Synexus Clinical Research US, Inc. - Orlando Orlando Florida 32806
Palm Beach Research Center West Palm Beach Florida 33409
Grady Health System Atlanta Georgia 30303
Children's Healthcare of Atlanta Atlanta Georgia 30322
Hope Clinic of The Emory Vaccine Center Decatur Georgia 30030
Meridian Clinical Research Savannah Georgia 31406
Clinical Research Atlanta Stockbridge Georgia 30281
Synexus Clinical Research US, Inc. - Chicago Chicago Illinois 60602
UIC Project WISH CRS Chicago Illinois 60612
University of Chicago-Hospital Chicago Illinois 60637
Johnson County Clin-Trials Lenexa Kansas 66219
Alliance for Multispecialty Research Newton Kansas 67114
Alliance for Multispecialty Research- East Wichita Wichita Kansas 67207
Meridian Clinical Research Baton Rouge Louisiana 70808
Benchmark Research - Metairie Metairie Louisiana 70006
University of Maryland School of Medicine Baltimore Maryland 21201
Synexus - Optimal Research - Rockville Rockville Maryland 20850
Meridian Clinical Research Rockville Maryland 20854
Brigham and Women's Hospital Boston Massachusetts 02115
Henry Ford Health System Detroit Michigan 48202
MediSync Clinical Research Hattiesburg Clinic Petal Mississippi 39465
Saint Louis University St Louis Missouri 63104
Sundance Clinical Research St Louis Missouri 63141
Meridian Clinical Research Grand Island Nebraska 68803
Meridian Clinical Research Norfolk Nebraska 68701
Meridian Clinical Research Omaha Nebraska 68134
Clinical Research Center of Nevada Las Vegas Nevada 89104
AB Clinical Trials Las Vegas Nevada 89119
Hackensack University Medical Center Hackensack New Jersey 07601
New Jersey Medical School Newark New Jersey 07103
Meridian Clinical Research Binghamton New York 13901
Weill Cornell Chelsea - (CRS) New York New York 10010
Weill Cornell Medical College New York New York 10065
University of North Carolina at Chapel Hill Chapel Hill North Carolina 27599
Tryon Medical Partners Charlotte North Carolina 28210
Carolina Institute for Clinical Research - M3 Wake Research Fayetteville North Carolina 28304
M3 Wake Research, Inc - M3 Wake Raleigh North Carolina 27612
Trial Management Associates Wilmington North Carolina 28403
Wake Forest University Health Sciences Winston-Salem North Carolina 27157
Synexus Clinical Research US, Inc. - Cincinnati Cincinnati Ohio 45236
New Horizons Clinical Research Cincinnati Ohio 45242
Cincinnati CRS Cincinnati Ohio 45267
Rapid Medical Research Inc Cleveland Ohio 44122
Lynn Health Science Institute Oklahoma City Oklahoma 73112
Crisor Medford Oregon 97504
University of Pennsylvania Philadelphia Pennsylvania 19104
UPMC University Center Pittsburgh Pennsylvania 15213
Keystone VitaLink Research Anderson South Carolina 29621
Keystone VitaLink Research - Greenville Greenville South Carolina 29615
Coastal Carolina Research Center Mt. Pleasant South Carolina 29464
Keystone VitaLink Research - Spartanburg Spartanburg South Carolina 29303
Meridian Clinical Research Dakota Dunes South Dakota 57049
WR-ClinSearch Chattanooga Tennessee 37421
Alliance for Multispecialty Research Knoxville Tennessee 39720
Vanderbilt University Medical Center, Medical Arts Building Nashville Tennessee 37232
Vanderbilt University Medical Center, Medical Center North Nashville Tennessee 37232
Benchmark Research - Austin Austin Texas 78705
Synexus - Optimal Research - Austin Austin Texas 78705
Tekton Research Austin Texas 78745
Advanced Clinical Research - Be Well MD Cedar Park Texas 78613
Global Medical Research - M3 Wake Research Dallas Texas 75224
Synexus Clinical Research US, Inc. - Dallas Dallas Texas 75234
Benchmark Research - Fort Worth Fort Worth Texas 76135
University of Texas Medical Branch at Galveston Galveston Texas 77555
Baylor College of Medicine Houston Texas 77030
DM Clinical Research - Texas Center For Drug Development Houston Texas 77081
Laguna Clinical Research Laredo Texas 78041
Centex Studies McAllen Texas 78504
Benchmark Research - San Angelo San Angelo Texas 76904
Clinical Trials of Texas, Inc San Antonio Texas 78229
DM Clinical Research Tomball Texas 77375
Synexus Clinical Research US, Inc. - Salt Lake City Murray Utah 84123
Foothill Family Clinic - North Salt Lake City Utah 84109
Foothill Family Clinic-South Clinic Salt Lake City Utah 84121
Kaiser Permanente - Seattle Seattle Washington 98101

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

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About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT04470427, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Mar 20, 2024 · Synced Sep 3, 2026

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Open the official record

The complete protocol, eligibility criteria, and contact information for NCT04470427 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →