AzTrials
AzTrials

InfluenzaPhase 1/2NCT06821061

A Study to Learn About How the Flu and COVID-19 Vaccines Act in Healthy People

A Phase 1/2 study testing Investigational Influenza Vaccine, Investigational COVID-19 Vaccine and Investigational Influenza and COVID-19 Combination Vaccine in people with Influenza and COVID-19 (Coronavirus Disease 2019), run by BioNTech SE at 31 sites in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
Search all trials

Trial summary

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. Read more about this study

Who is it for?
Ages 18 years and olderHealthy volunteers can take part
What is being tested?
Investigational Influenza Vaccine, Investigational COVID-19 Vaccine and Investigational Influenza and COVID-19 Combination Vaccine
Type of treatment
Vaccines
Could I receive a placebo?
No, everyone receives an active treatment
How many people
2,650 participants
Where
31 sitesUnited States
Study dates
10 Feb 2025to 17 Dec 2025
Phase
Phase 1/2
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Participants 18 years of age or older
  • Healthy participants who are determined by medical history, physical examination (if clinically required), and clinical judgement of the investigator to be eligible for inclusion in the study

Who cannot join

  • Vaccination with any investigational or licensed influenza vaccine within 150 days of enrollment
  • Vaccination with any investigational or licensed COVID 19 vaccine within 150 days of enrollment.
  • Receipt of antiviral therapies for influenza (eg, Tamiflu) within 180 days prior to Day 1.
  • Refer to the study contact for further eligibility details

Trial locations and contacts

31 sites in 1 country.

31 sites in 1 country

United States31 sites
  • Anaheim Clinical Trials, LLC

    Anaheim, California, 92801

  • Headlands Horizons, LLC dba Headlands Research-Brownsville

    Brownsville, Texas, 78526

  • Charlottesville Medical Research

    Charlottesville, Virginia, 22911

  • Clinical Research Professionals

    Chesterfield, Missouri, 63005

  • Centricity Research Columbus Ohio Multispecialty

    Columbus, Ohio, 43213

  • Alliance for Multispecialty Research, LLC

    Doral, Florida, 33172

  • Upstate Global Health Institute

    East Syracuse, New York, 13057

  • Indago Research & Health Center, Inc

    Hialeah, Florida, 33012

  • East-West Medical Research Institute

    Honolulu, Hawaii, 96814

  • DM Clinical Research- Cyfair

    Houston, Texas, 77065

  • AMR Clinical

    Knoxville, Tennessee, 37909

  • AMR Clinical

    Knoxville, Tennessee, 37920

  • Orange County Research Center

    Lake Forest, California, 92630

  • SMS Clinical Research

    Mesquite, Texas, 75149

  • Miami Dade Medical Research Institute, LLC

    Miami, Florida, 33176

  • Palm Springs Community Health Center

    Miami Lakes, Florida, 33014

  • Clinical Research Consulting

    Milford, Connecticut, 06460

  • Clinical Research Associates Inc

    Nashville, Tennessee, 37203

  • Coastal Carolina Research Center

    North Charleston, South Carolina, 29405

  • Las Vegas Clinical Trials

    North Las Vegas, Nevada, 89030

  • DM Clinical Research - Philadelphia

    Philadelphia, Pennsylvania, 19107

  • Artemis Institute for Clinical Research

    Riverside, California, 92503

  • University of Rochester Medical Center

    Rochester, New York, 14642

  • 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

  • Artemis Institute for Clinical Research

    San Diego, California, 92103

  • Kaiser Permanente Washington Health Research Institute (KPWHRI)

    Seattle, Washington, 98101

  • Clinical Research Atlanta

    Stockbridge, Georgia, 30281

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

    Tomball, Texas, 77375

  • Diablo Clinical Research, Inc.

    Walnut Creek, California, 94598

  • Trial Management Associates - Wilmington - Floral Parkway

    Wilmington, North Carolina, 28403

Other trials in United States

About this study

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

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.

Being tested
Investigational Influenza Vaccine, Investigational COVID-19 Vaccine, Investigational Influenza and COVID-19 Combination Vaccine, Licensed Influenza Vaccine 1, Licensed Influenza Vaccine 2
Medical subject headings
Influenza, Human, COVID-19

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Investigational Influenza VaccineBiological

    Investigational Influenza Vaccine

  • Investigational COVID-19 VaccineBiological

    Investigational COVID-19 Vaccine

  • Investigational Influenza and COVID-19 Combination VaccineCombination product

    Investigational Combined Influenza and COVID-19 Vaccine

  • Licensed Influenza Vaccine 1Biological

    Licensed Influenza Vaccine 1

  • Licensed Influenza Vaccine 2Biological

    Licensed Influenza Vaccine 2

  • Licensed Influenza Vaccine 3Biological

    Licensed Influenza Vaccine 3

  • Licensed COVID-19 VaccineBiological

    Pfizer-BioNTech COVID-19 Vaccine

Study groups in NCT06821061
Study groupRoleWhat they receive
Arm AExperimentalLow Dose COVID-19 Vaccine (1a)
Receives: Biological: Investigational COVID-19 Vaccine
Arm BExperimentalLow Dose COVID-19 Vaccine ( 1b)
Receives: Biological: Investigational COVID-19 Vaccine
Arm CExperimentalLow Dose COVID-19 Vaccine ( 1c)
Receives: Biological: Investigational COVID-19 Vaccine
Arm DExperimentalInvestigational Influenza and COVID-19 Combination Vaccine (High Dose Combination 1)
Receives: Combination Product: Investigational Influenza and COVID-19 Combination Vaccine
Arm EExperimentalInvestigational Influenza and COVID-19 Combination Vaccine (Medium Dose Combination 2)
Receives: Combination Product: Investigational Influenza and COVID-19 Combination Vaccine
Arm FExperimentalInvestigational Influenza and COVID-19 Combination Vaccine (High Dose Combination 3)
Receives: Combination Product: Investigational Influenza and COVID-19 Combination Vaccine
Arm GExperimentalInvestigational Influenza and COVID-19 Combination Vaccine (High Dose Combination 4)
Receives: Combination Product: Investigational Influenza and COVID-19 Combination Vaccine
Arm HActive comparatorLicensed COVID-19 Vaccine
Receives: Biological: Licensed COVID-19 Vaccine
Arm IActive comparatorLicensed Influenza Vaccine (1)
Receives: Biological: Licensed Influenza Vaccine 1
Arm JExperimentalInvestigational Influenza and COVID-19 Combination Vaccine (High Dose Combination 5)
Receives: Combination Product: Investigational Influenza and COVID-19 Combination Vaccine
Arm KExperimentalInvestigational Influenza and COVID-19 Combination Vaccine (High Dose Combination 6)
Receives: Combination Product: Investigational Influenza and COVID-19 Combination Vaccine
Arm LExperimentalInvestigational Influenza and COVID-19 Combination Vaccine (High Dose Combination 7)
Receives: Combination Product: Investigational Influenza and COVID-19 Combination Vaccine
Arm MActive comparatorLicensed COVID-19 Vaccine
Receives: Biological: Licensed COVID-19 Vaccine
Arm NActive comparatorLicensed Influenza Vaccine (2)
Receives: Biological: Licensed Influenza Vaccine 2
Arm AAExperimentalInvestigational Influenza and COVID-19 Combination Vaccine (High Dose Combination 6)
Receives: Combination Product: Investigational Influenza and COVID-19 Combination Vaccine
Arm BBExperimentalInvestigational Influenza and COVID-19 Combination Vaccine (High Dose Combination 4)
Receives: Combination Product: Investigational Influenza and COVID-19 Combination Vaccine
Arm CCExperimentalInvestigational Influenza and COVID-19 Combination Vaccine (High Dose Combination 7)
Receives: Combination Product: Investigational Influenza and COVID-19 Combination Vaccine
Arm DDExperimentalInvestigational Influenza and COVID-19 Combination Vaccine (Medium Dose Combination 2)
Receives: Combination Product: Investigational Influenza and COVID-19 Combination Vaccine
Arm EEExperimentalInvestigational Influenza and COVID-19 Combination Vaccine (High Dose Combination 3)
Receives: Combination Product: Investigational Influenza and COVID-19 Combination Vaccine
Arm FFActive comparatorLicensed COVID-19 Vaccine
Receives: Biological: Licensed COVID-19 Vaccine
Arm GGActive comparatorLicensed Influenza Vaccine (3)
Receives: Biological: Licensed Influenza Vaccine 3
Arm HHActive comparatorLicensed Influenza Vaccine (2)
Receives: Biological: Licensed Influenza Vaccine 2
Arm IIExperimentalLow Dose COVID-19 Vaccine ( 1b)
Receives: Biological: Investigational COVID-19 Vaccine
Arm JJExperimentalLow Dose COVID-19 Vaccine ( 1c)
Receives: Biological: Investigational COVID-19 Vaccine
Arm KKExperimentalInvestigational Influenza and COVID-19 Combination Vaccine (High Dose Combination 4)
Receives: Combination Product: Investigational Influenza and COVID-19 Combination Vaccine
Arm LLExperimentalInvestigational Influenza and COVID-19 Combination Vaccine (High Dose Combination 7)
Receives: Combination Product: Investigational Influenza and COVID-19 Combination Vaccine
Arm MMExperimentalInvestigational Influenza and COVID-19 Combination Vaccine (Medium Dose Combination 2)
Receives: Combination Product: Investigational Influenza and COVID-19 Combination Vaccine
Arm NNExperimentalInvestigational Influenza and COVID-19 Combination Vaccine (High Dose Combination 3)
Receives: Combination Product: Investigational Influenza and COVID-19 Combination Vaccine
Arm OOExperimentalInvestigational Influenza and COVID-19 Combination Vaccine (High Dose Combination 5)
Receives: Combination Product: Investigational Influenza and COVID-19 Combination Vaccine
Arm PPExperimentalMedium Dose Investigational Influenza Vaccine (1)
Receives: Biological: Investigational Influenza Vaccine
Arm QQExperimentalHigh Dose Investigational Influenza Vaccine (2)
Receives: Biological: Investigational Influenza Vaccine
Arm RRActive comparatorLicensed COVID-19 Vaccine
Receives: Biological: Licensed COVID-19 Vaccine
Arm SSActive comparatorLicensed Influenza Vaccine (3)
Receives: Biological: Licensed Influenza Vaccine 3

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Percentage of participants reporting prompted local reactions within 7 days following investigational product administration

    Measured: Day 7

  2. Percentage of participants reporting prompted systemic events within 7 days following investigational product administration

    Measured: Day 7

  3. Percentage of participants reporting adverse events (AEs) through 1 month following investigational product administration

    Measured: 1 month

  4. Percentage of participants reporting serious adverse events (SAEs) through 6 months following investigational product administration

    Measured: 6 months

Secondary outcomes (1)
  1. GMTs before and through 1 month following investigational product administration

    Measured: Before vaccination through to 1 month after vaccination

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted11 Feb 2025
  2. Study start10 Feb 2025
  3. Primary completion17 Dec 2025
  4. Study completion17 Dec 2025

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1/2
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
2,650 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06821061
Sponsor's protocol ID
C6271001
Other IDs
C6271001-C1, C6271001-C1A
Status last verified
Jan 2026
First submitted
7 Feb 2025
Last updated
26 Jan 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 1/2 study testing Investigational Influenza Vaccine, Investigational COVID-19 Vaccine and Investigational Influenza and COVID-19 Combination Vaccine in people with Influenza and COVID-19 (Coronavirus Disease 2019), run by BioNTech SE at 31 sites in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 2 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 26 Jan 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 31 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this combined phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Percentage of participants reporting prompted local reactions within 7 days following investigational product administration (time frame: Day 7). The study lists 4 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 26 Jan 2026.

Free account

Keep searching with a free account

You’ve used your 3 free searches for this session. Log in or create a free AzTrials account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in