Simultaneous mRNA COVID-19 and IIV4 Vaccination Study
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ClinicalTrials.gov Identifier: NCT05028361 |
Recruitment Status :
Recruiting
First Posted : August 31, 2021
Last Update Posted : March 22, 2022
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Condition or disease | Intervention/treatment | Phase |
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Pain Quality of Life Injection Site Reaction Adverse Drug Event | Biological: mRNA COVID-19 Biological: IIV4 Other: Placebo | Phase 4 |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 450 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Triple (Participant, Care Provider, Outcomes Assessor) |
Primary Purpose: | Prevention |
Official Title: | Safety of Simultaneous Versus Sequential Administration of mRNA COVID-19 Vaccines and Quadrivalent Inactivated Influenza Vaccine (IIV4) in Adults and Adolescents: A Randomized Observer Blinded Study |
Actual Study Start Date : | October 4, 2021 |
Estimated Primary Completion Date : | April 21, 2022 |
Estimated Study Completion Date : | July 29, 2022 |

Arm | Intervention/treatment |
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Simultaneous Vaccination Group
Subjects will receive a dose of mRNA COVID-19 vaccine (either as a study procedure or standard of care) and IIV4 at Visit 1, saline placebo at Visit 2, and mRNA COVID-19 vaccine at Visit 3 for participants receiving their primary series of mRNA COVID-19 vaccine.
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Biological: mRNA COVID-19
ACIP recommended vaccine Biological: IIV4 ACIP recommended vaccine Other: Placebo Saline Control |
Sequential Vaccination Group
Subjects will receive a dose of mRNA COVID-19 vaccine (either as a study procedure or standard of care) and placebo at Visit 1, IIV4 at Visit 2, and mRNA COVID-19 vaccine at Visit 3 for participants receiving their primary series of mRNA COVID-19 vaccine.
|
Biological: mRNA COVID-19
ACIP recommended vaccine Biological: IIV4 ACIP recommended vaccine Other: Placebo Saline Control |
- Number of participants with moderate or more severe fever, chills, myalgia, or arthralgia in the Simultaneous Group and the Sequential Group following both Vaccination Visit 1 and 2 [ Time Frame: Visit 1 and Visit 2, Up to 7 Days Post Vaccination ]Subjects will be asked to complete a memory aid to document symptoms and measure temperature daily.
- Number of participants with moderate or more severe fever, chills, myalgia, or arthralgia in the Simultaneous versus the Sequential Group following the first vaccination visit [ Time Frame: Visit 1, Up to 7 Days Post Vaccination ]Subjects will be asked to complete a memory aid to document symptoms and measure temperature daily.
- Number of participants with moderate or more severe fever, chills, myalgia, or arthralgia in the Simultaneous versus Sequential Group following the second vaccination visit [ Time Frame: Visit 2, Up to 7 Days Post Vaccination ]Subjects will be asked to complete a memory aid to document symptoms and measure temperature daily.
- Number of participants in the Simultaneous and Sequential vaccination groups with solicited local and systemic reactogenicity events according to severity grade after the first, second and third vaccination visit [ Time Frame: Up to 7 Days Post Vaccination ]Subjects will be asked to complete a memory aid to document symptoms and measure temperature daily.
- Observed serious adverse events in both treatment groups [ Time Frame: Up to Day 121 ]

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Ages Eligible for Study: | 12 Years and older (Child, Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | Yes |
Inclusion Criteria:
- Persons aged ≥12 years if receiving primary two-dose mRNA COVID-19 vaccine series or persons aged ≥18 years if receiving a third mRNA COVID-19 vaccine dose according to FDA authorization or approval and ACIP recommendation. Note: receipt of an mRNA COVID-19 vaccine within 8 hours of enrollment is permitted
- English or Spanish literate
- Intention of receiving influenza vaccine and COVID-19 vaccine based on ACIP-CDC guidelines
- Willing to provide written informed consent
- Intention of being available for entire study period and complete all relevant study procedures, including follow-up phone calls and clinic visits
Exclusion Criteria:
- Currently pregnant, planning to become pregnant within the first three months of the study per participant self-report or likely to be pregnant per screening criteria as defined in Section 5.1 at Visit 1
- Prior receipt of IIV4 during the 2021-2022 influenza season
- Prior receipt of non-mRNA COVID-19 vaccine
- Prior receipt of more than 2 mRNA COVID-19 vaccines
- Documented COVID-19 infection within 6 weeks prior to enrollment confirmed by either medical history or lab testing
- History of severe allergic reaction after a previous dose of any influenza vaccine; or to an influenza vaccine component, including egg protein
- History of severe adverse reaction associated with a vaccine and/or severe allergic reaction (e.g. anaphylaxis) to any component of an mRNA vaccine
- Receipt of any licensed inactivated vaccine within 2 weeks prior to enrollment in this study, receipt of any licensed live vaccine within 4 weeks prior to enrollment in this study, or receipt of Shingrix (Zoster Vaccine Recombinant, Adjuvanted) or HEPLISAV-B (Hepatitis B Vaccine (Recombinant), Adjuvanted) vaccine within 6 weeks prior to enrollment in this study or planning receipt of any vaccines following enrollment until 6 weeks after receipt of the second dose of mRNA COVID-19 vaccine
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Has an active neoplastic disease (excluding non-melanoma skin cancer or prostate cancer that is stable in the absence of therapy) or a history of any hematologic malignancy*
*Participants with a history of malignancy may be included if, after previous treatment by surgical excision, chemotherapy or radiation therapy, the participant has been observed for a period that in the investigator's estimation provides a reasonable assurance of sustained cure
- Thrombocytopenia, bleeding disorder, or anticoagulant use contraindicating intramuscular injection (a daily aspirin may be acceptable).
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Has immunosuppression as a result of an underlying illness or medications, such as antirejection/transplant regimens or immunomodulatory agents. Stable HIV disease is permitted per the following parameters:
a. Confirmed stable HIV disease defined as document viral load <50 copies/mL and CD4 count >200 within 6 months before enrollment, and on stable antiretroviral therapy for at least 6 months
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Has known hepatitis B (HBV) or hepatitis C (HBC). Stable HBV or HBC are permitted per the following parameters:
- If known HBV: confirmed inactive chronic HBV infection: HBsAg present for ≥6 months and HBeAg negative, anti-HBe positive; serum HBV DNA <2000 IU/mL; persistently normal ALT or AST levels; in those who had liver biopsy, findings that confirm absence of significant necroinflammation
- If known HCV: evidence of sustained virological response for ≥12 weeks after treatment or without evidence of HCV RNA viremia (undetectable HCV RNA)
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Use of oral, parenteral, or high-dose inhaled glucocorticoids
*For definition of high-dose inhaled glucocorticoids, reference Appendix B.
- History of Guillain-Barré syndrome
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Anyone who is already enrolled or plans to enroll in another clinical trial with an investigational product during the study period.*
*Per protocol, co-enrollment in observational or behavioral intervention studies are permitted at any time. An investigational product may be permitted for therapy of an illness condition that occurs during the study period e.g. COVID-19 illness.
- Hearing loss determined by the investigators to prevent successful communication over the phone
- History of myocarditis or pericarditis
- History of multisystem inflammatory syndrome in children (MIS-C) or adults (MIS-A).
- Has injury or other reason why deltoid site on both arms cannot be used for vaccinations.
- Any condition which, in the opinion of the investigators, may pose a health risk to the subject or interfere with the evaluation of the study objectives.
- Anyone who is a relative of any research study personnel.
- Anyone who is an employee of any research study personnel.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT05028361
Contact: Emmanual B Walter, MD, MPH | 919-620-5346 | chip.walter@duke.edu | |
Contact: Grace N Davis, MS | 919-385-5786 | grace.davis@duke.edu |
United States, Maryland | |
John Hopkins University | Not yet recruiting |
Baltimore, Maryland, United States, 21205 | |
Contact: Kawsar R Talaat, MD 410-502-9627 ktalaat@jhu.edu | |
United States, North Carolina | |
Duke University | Recruiting |
Durham, North Carolina, United States, 27709 | |
Contact: Emmanuel Walter, MD, MPH 919-620-5374 chip.walter@duke.edu | |
Contact: Grace Davis, MS 9193855786 grace.davis@duke.edu | |
United States, Ohio | |
Cincinnati Children's Hospital Medical Center | Not yet recruiting |
Cincinnati, Ohio, United States, 45229 | |
Contact: Elizabeth Schlaudecker, MD, MPH 513-803-5187 elizabeth.schlaudecker@cchmc.org |
Principal Investigator: | Emmanual B Walter, MD, MPH | Duke University | |
Principal Investigator: | Karen R Broder, MD | Centers for Disease Control and Prevention | |
Principal Investigator: | Kawsar Talaat, MD | Johns Hopkins University | |
Principal Investigator: | Elizabeth Schlaudecker, MD, MPH | Children's Hospital Medical Center, Cincinnati |
Responsible Party: | Duke University |
ClinicalTrials.gov Identifier: | NCT05028361 |
Other Study ID Numbers: |
Pro00109102 |
First Posted: | August 31, 2021 Key Record Dates |
Last Update Posted: | March 22, 2022 |
Last Verified: | March 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Product Manufactured in and Exported from the U.S.: | Yes |
COVID-19 Influenza vaccine mRNA COVID-19 vaccine influenza vaccine |
safety quality of life pain following vaccination fever following vaccination |
COVID-19 Injection Site Reaction Drug-Related Side Effects and Adverse Reactions Respiratory Tract Infections Infections Pneumonia, Viral Pneumonia Virus Diseases Coronavirus Infections |
Coronaviridae Infections Nidovirales Infections RNA Virus Infections Lung Diseases Respiratory Tract Diseases Chemically-Induced Disorders Extravasation of Diagnostic and Therapeutic Materials Pathologic Processes |