A Study to Learn About How the Flu and COVID-19 Vaccines Act in Healthy People
Public ClinicalTrials.gov record NCT06821061. 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.
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 1/2 RANDOMIZED, DOUBLE-BLINDED STUDY TO EVALUATE THE SAFETY, TOLERABILITY, AND IMMUNOGENICITY OF MODIFIED RNA VACCINE CANDIDATES AGAINST INFLUENZA AND COVID-19 IN HEALTHY INDIVIDUALS
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The purpose of this study is to learn about how the flu and COVID vaccines act when given alone or when mixed together. This study is seeking healthy participants aged 18 or older. All participants in this study will receive only 1 shot to their arm, either a flu or COVID vaccine, alone or mixed. Participants will take part in this study for about 6 months, and participants will need to visit the clinical study site at least 4 times.
Study identification
- NCT ID
- NCT06821061
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 1, Phase 2
- Enrollment
- 2,650 participants
Conditions and interventions
Conditions
Interventions
- Investigational Influenza Vaccine Biological
- Investigational COVID-19 Vaccine Biological
- Investigational Influenza and COVID-19 Combination Vaccine Combination Product
- Licensed Influenza Vaccine 1 Biological
- Licensed Influenza Vaccine 2 Biological
- Licensed Influenza Vaccine 3 Biological
- Licensed COVID-19 Vaccine Biological
Biological · Combination Product
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
- Feb 9, 2025
- Primary completion
- Dec 16, 2025
- Completion
- Dec 16, 2025
- Last update posted
- Jan 25, 2026
2025
United States locations
- U.S. sites
- 31
- U.S. states
- 17
- U.S. cities
- 29
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Anaheim Clinical Trials, LLC | Anaheim | California | 92801 | — |
| Orange County Research Center | Lake Forest | California | 92630 | — |
| Artemis Institute for Clinical Research | Riverside | California | 92503 | — |
| Artemis Institute for Clinical Research | San Diego | California | 92103 | — |
| Diablo Clinical Research, Inc. | Walnut Creek | California | 94598 | — |
| Clinical Research Consulting | Milford | Connecticut | 06460 | — |
| Alliance for Multispecialty Research, LLC | Doral | Florida | 33172 | — |
| Indago Research & Health Center, Inc | Hialeah | Florida | 33012 | — |
| Miami Dade Medical Research Institute, LLC | Miami | Florida | 33176 | — |
| Palm Springs Community Health Center | Miami Lakes | Florida | 33014 | — |
| Clinical Research Atlanta | Stockbridge | Georgia | 30281 | — |
| East-West Medical Research Institute | Honolulu | Hawaii | 96814 | — |
| Clinical Research Professionals | Chesterfield | Missouri | 63005 | — |
| Las Vegas Clinical Trials | North Las Vegas | Nevada | 89030 | — |
| Upstate Global Health Institute | East Syracuse | New York | 13057 | — |
| University of Rochester Medical Center | Rochester | New York | 14642 | — |
| Trial Management Associates - Wilmington - Floral Parkway | Wilmington | North Carolina | 28403 | — |
| Centricity Research Columbus Ohio Multispecialty | Columbus | Ohio | 43213 | — |
| DM Clinical Research - Philadelphia | Philadelphia | Pennsylvania | 19107 | — |
| Coastal Carolina Research Center | North Charleston | South Carolina | 29405 | — |
| AMR Clinical | Knoxville | Tennessee | 37909 | — |
| AMR Clinical | Knoxville | Tennessee | 37920 | — |
| Clinical Research Associates Inc | Nashville | Tennessee | 37203 | — |
| Headlands Horizons, LLC dba Headlands Research-Brownsville | Brownsville | Texas | 78526 | — |
| DM Clinical Research- Cyfair | Houston | Texas | 77065 | — |
| SMS Clinical Research | Mesquite | Texas | 75149 | — |
| Dynamed Clinical Research, LP d/b/a DM Clinical Research | Tomball | Texas | 77375 | — |
| J. Lewis Research, Inc. / Foothill Family Clinic | Salt Lake City | Utah | 84109 | — |
| J. Lewis Research, Inc. / Foothill Family Clinic South | Salt Lake City | Utah | 84121 | — |
| Charlottesville Medical Research | Charlottesville | Virginia | 22911 | — |
| Kaiser Permanente Washington Health Research Institute (KPWHRI) | 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.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT06821061, 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 Jan 25, 2026 · Synced Sep 7, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT06821061 live on ClinicalTrials.gov.