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Clinical Trial NCT06291857 for COVID-19 is active, not recruiting. See the Trial Radar Card View and AI discovery tools for all the details. Or ask anything here.
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A Study to Evaluate the Safety and Immunogenicity of COVID-19 Vaccine and Influenza Combination Vaccine Phase 3 9,320 Vaccine Study

Active, not recruiting
Clinical Trial NCT06291857 is designed to study Prevention for COVID-19. It is a Phase 3 interventional study that is active, not recruiting, having started on 9 December 2024, with plans to enroll 9,320 participants. Led by Novavax, it is expected to complete by 30 September 2026. The latest data from ClinicalTrials.gov was last updated on 18 July 2025.
Brief Summary
This is a medical study where participants will be randomly assigned to receive either a new combination vaccine that protects against both COVID-19 and the flu, or a standard flu vaccine. The researchers conducting the study won't know which vaccine each participant receives, ensuring their observations are unbiased. This study compares the new combination vaccine to an already available flu vaccine to see how well ...Show More
Detailed Description
The study will enroll up to approximately 7,022,000 medically stable (based on history and physical examination) adult male and female participants ≥ 65 65 years of age in Part 1 and up to approximately 2,300 medically stable (based on history and physical examination) adult male and female participants ≥ 65 years of age in Part 2. In Part 1, pParticipants will be randomly assigned to receive either CIC, Novavax COVI...Show More
Official Title

A Randomized, Observer-Blinded, Active-Controlled Study to Evaluate the Safety and Immunogenicity of a COVID-19 Influenza Combination Nanoparticle Vaccine and a Standalone Trivalent Nanoparticle Influenza Hemagglutinin Vaccine in Participants ≥ 65 Years of Age.

Conditions
COVID-19
Other Study IDs
  • CIC-E-301
NCT ID Number
Start Date (Actual)
2024-12-09
Last Update Posted
2025-07-18
Completion Date (Estimated)
2026-09-30
Enrollment (Estimated)
9,320
Study Type
Interventional
PHASE
Phase 3
Status
Active, not recruiting
Keywords
CIC (Coronavirus Disease 2019 Influenza Combination)
Influenza
Fluzone High-Dose
Primary Purpose
Prevention
Design Allocation
Randomized
Interventional Model
Crossover Assignment
Masking
Single
Arms / Interventions
Participant Group/ArmIntervention/Treatment
ExperimentalCIC Vaccine
A single 0.5 mL IM injection on Day 0
CIC Vaccine Co-formulated tNIV2 , SARSCoV-2 rS and Matrix-M Adjuvant
CIC will contain SARs-CoV-2 antigen (35 μg), tNIV antigens (2 influenza A \[H1N1 and H3N2\] and 1 influenza B-Victoria lineage strains; 60 μg/strain
ExperimentalNovavax COVID-19 Vaccine
A single 0.5 mL IM injection on Day 0
Novavax COVID-19 Vaccine
Each 0.5 mL dose comprises 5 µg SARS-CoV-2 S protein and 50 µg Matrix-M adjuvant
ExperimentaltNIV Vaccine
A single 0.5 mL IM injection on Day 0
tNIV Vaccine
2 influenza A \[H1N1 and H3N2\] and 1 influenza B-Victoria lineage strains (60 μg/strain), and Matrix-M adjuvant (75 μg)
ExperimentalFluzone High-Dose
A single 0.5 mL IM injection on Day 0
Fluzone High Dose
Fluzone High-Dose is supplied as a suspension for IM injection 0.5 mL with 60 µg per strain
Primary Outcome Measures
Outcome MeasureMeasure DescriptionTime Frame
Numbers of participants with solicited local and systemic adverse events (AEs)
Numbers of participants with solicited local and systemic AEs over the 7 days post-vaccination.
7 days post-vaccination
Numbers of participants reporting unsolicited AEs and medically attended adverse events (MAAEs).
Numbers of participants reporting unsolicited AEs and MAAEs over 21 days post-vaccination.
28 days post-vaccination
Treatment-related MAAEs, serious adverse events (SAEs), and adverse events of special interest (AESIs) (including potential immune-mediated medical conditions [PIMMCs] and myocarditis and/or pericarditis)
Numbers of participants with treatment-related MAAEs, AESIs (including PIMMC and myocarditis and/or pericarditis), and SAEs will be collected for 12 months (approximately 364 days) post-vaccination.
Day 0 to Day 364
Hemagglutination Inhibition (HAI) antibody responses of the CIC vaccine compared to Fluzone High-Dose of homologous A and B strains Expressed as GMT
Hemagglutination Inhibition (HAI) antibody responses of the CIC vaccine compared to Fluzone High-Dose of homologous influenza strains (two influenza A strains and one influenza B-Victoria lineage strain) on Days 0 and 28
Days 0 and 28
Hemagglutination Inhibition (HAI) antibody responses of the CIC vaccine compared to Fluzone High-Dose of homologous A and B strains Expressed as GMTR
Hemagglutination Inhibition (HAI) antibody responses of the CIC vaccine compared to Fluzone High-Dose of homologous influenza strains (two influenza A strains and one influenza B-Victoria lineage strain) on Days 28
Days 28
Percentage of Participants With a (HAI) antibody responses of the CIC vaccine compared to Fluzone High-Dose for 3 vaccine-homologous influenza strains Expressed as SCR
Percentage of Participants With a (HAI) antibody responses of the CIC vaccine compared to Fluzone High-Dose for 3 vaccine-homologous influenza strain on Days 28
Days 28
Neutralizing Antibody (NAb) Responses of the CIC vaccine compared to Fluzone High-Dose of homologous A and B strains Expressed as GMT
Neutralizing Antibody (NAb) Responses Assessed against three homologous influenza strains (two influenza A strains and one influenza B-Victoria lineage strain) on Day 28
Days 28
Neutralizing Antibody (NAb) Responses of the CIC vaccine compared to Fluzone High-Dose of homologous A and B strains Expressed as GMTR
Neutralizing Antibody (NAb) Responses Assessed against three homologous influenza strains (two influenza A strains and one influenza B-Victoria lineage strain) on Day 28
Days 28
Percentage of Participants With a (NAb) Responses of the CIC vaccine compared to Fluzone High-Dose of homologous A and B strains Expressed as SCR
Neutralizing Antibody (NAb) Responses Assessed against three homologous influenza strains (two influenza A strains and one influenza B-Victoria lineage strain) on Day 28
Days 28
Hemagglutination Inhibition (HAI) antibody titers specific to HA receptor-binding domains of (tNIV) comparable to Fluzone High-Dose of homologous influenza A and B strains expressed as GMT
Hemagglutination Inhibition (HAI) antibody titers specific to HA receptor-binding domains of (tNIV) comparable to Fluzone High-Dose of 2 influenza A strains and an influenza B-Victoria lineage strain) on Day 28
Day 28
Hemagglutination Inhibition (HAI) antibody titers specific to HA receptor-binding domains of (tNIV) comparable to Fluzone High-Dose of homologous influenza A and B strains expressed as GMTR
Hemagglutination Inhibition (HAI) antibody titers specific to HA receptor-binding domains of (tNIV) comparable to Fluzone High-Dose of 2 influenza A strains and an influenza B-Victoria lineage strain) on Day 28
Day 28
Percentage of Participants with (HAI) antibody titers specific to HA receptor-binding domains of (tNIV) comparable to Fluzone High-Dose of homologous influenza A and B strains expressed as SCR
Hemagglutination Inhibition (HAI) antibody titers specific to HA receptor-binding domains of (tNIV) comparable to Fluzone High-Dose of 2 influenza A strains and an influenza B-Victoria lineage strain) on Day 28
Day 28
Secondary Outcome Measures
Outcome MeasureMeasure DescriptionTime Frame
Immunogenicity- HAI antibody titers specific for the HA receptor binding domains of vaccine homologous A and B influenza strains Expressed as Geometric Mean Titers (GMT)
HAI antibody titers specific for the HA receptor binding domains of vaccine response CIC vaccine compared to Fluzone High-Dose on Day 28
Days 28
Immunogenicity- HAI antibody titers specific for the HA receptor binding domains of vaccine homologous A and B influenza strains Expressed as GMFR
HAI antibody titers specific for the HA receptor binding domains of vaccine response CIC vaccine compared to Fluzone High-Dose on Day 28
Days 28
Percentage of Participants with HAI antibody titers specific for the HA receptor binding domains of vaccine homologous A and B influenza strains Expressed as SCR
HAI antibody titers specific for the HA receptor binding domains of vaccine response CIC vaccine compared to Fluzone High-Dose on Day 28
Days 28
HAI antibody titers specific for the HA receptor binding domains of vaccine homologous A and B influenza strains Expressed as GMTR
HAI antibody titers specific for the HA receptor binding domains of vaccine response CIC vaccine compared to Fluzone High-Dose on Day 28
Days 28
Influenza NAb responses: neutralizing antibody titers specific to vaccine homologous wild-type A and B influenza strains, is expressed as GMT
Neutralizing antibody titers specific to vaccine homologous influenza strains (ie, 2 influenza A strains and an influenza B-Victoria lineage strain) as measured by a neutralization assay, CIC and Fluzone High Dose on Day 28
Days 28
Influenza NAb responses: neutralizing antibody titers specific to vaccine homologous wild-type A and B influenza strains, is expressed as GMFR
Neutralizing antibody titers specific to vaccine homologous influenza strains (ie, 2 influenza A strains and an influenza B-Victoria lineage strain) as measured by a neutralization assay, CIC and Fluzone High Dose on Day 28
Days 28
Percentage of Participants with a NAb responses: neutralizing antibody titers specific to vaccine homologous wild-type A and B influenza strains, is expressed as SCR
Neutralizing antibody titers specific to vaccine homologous influenza strains (ie, 2 influenza A strains and an influenza B-Victoria lineage strain) as measured by a neutralization assay, CIC and Fluzone High Dose on Day 28
Days 28
Influenza NAb responses: neutralizing antibody titers specific to vaccine homologous wild-type A and B influenza strains, is expressed as GMTR
Neutralizing antibody titers specific to vaccine homologous influenza strains (ie, 2 influenza A strains and an influenza B-Victoria lineage strain) as measured by a neutralization assay, CIC and Fluzone High Dose on Day 28
Days 28
Hemagglutination Inhibition (HAI) antibody titers to tNIV and Fluzone High-Dose Expressed as GMT
Hemagglutination Inhibition (HAI) antibody titers specific to HA receptor-binding domains of vaccine-homologous influenza A and B strains on Day 28
Day 28
Hemagglutination Inhibition (HAI) antibody titers to tNIV and Fluzone High-Dose Expressed as GMFR
Hemagglutination Inhibition (HAI) antibody titers specific to HA receptor-binding domains of vaccine-homologous influenza A and B strains on Day 28 homologous SARS-CoV-2 strain CIC, Fluarix or Fluzone HD, and Novavax COVID-19 Vaccine expressed as SCR
Day 28
Percentage of Participants with (HAI) antibody titers to tNIV and Fluzone High-Dose Expressed as SCR
Hemagglutination Inhibition (HAI) antibody titers specific to HA receptor-binding domains of vaccine-homologous influenza A and B strains on Day 28
Day 28
Influenza neutralizing antibody (NAb) responses of trivalent nanoparticle influenza vaccine (tNIV) comparable to Fluzone High-Dose Expressed as GMT
Influenza neutralizing antibody (NAb) responses of trivalent nanoparticle influenza vaccine (tNIV) comparable to Fluzone High-Dose against three influenza strains (two A strains and one B-Victoria strain) on Day 28.
Day 28
Influenza neutralizing antibody (NAb) responses of trivalent nanoparticle influenza vaccine (tNIV) comparable to Fluzone High-Dose Expressed as GMFR
Influenza neutralizing antibody (NAb) responses of trivalent nanoparticle influenza vaccine (tNIV) comparable to Fluzone High-Dose against three influenza strains (two A strains and one B-Victoria strain) on Day 28.
Day 28
Influenza neutralizing antibody (NAb) responses of trivalent nanoparticle influenza vaccine (tNIV) comparable to Fluzone High-Dose Expressed as GMTR
Influenza neutralizing antibody (NAb) responses of trivalent nanoparticle influenza vaccine (tNIV) comparable to Fluzone High-Dose against three influenza strains (two A strains and one B-Victoria strain) on Day 28.
Day 28
Percentage of Participants with (NAb) responses of trivalent nanoparticle influenza vaccine (tNIV) comparable to Fluzone High-Dose Expressed as SCR
Influenza neutralizing antibody (NAb) responses of trivalent nanoparticle influenza vaccine (tNIV) comparable to Fluzone High-Dose against three influenza strains (two A strains and one B-Victoria strain) on Day 28.
Day 28
Participation Assistant
Eligibility Criteria

Eligible Ages
Older Adult
Minimum Age
65 Years
Eligible Sexes
All
Accepts Healthy Volunteers
Yes

To be included in this study, each individual must satisfy all the following criteria:

  1. Willing and able to give informed consent prior to study enrollment.

  2. Medically stable adult male or female ≥ 65 years of age at Screening.

  3. Participants may have 1 or more chronic medical diagnoses, but should be clinically stable as assessed by:

    1. Absence of changes in medical therapy in the past 2 months due to treatment failure or toxicity;
    2. Absence of medical events qualifying as SAEs within 3 months; and
    3. Absence of known, current, and life-limiting diagnoses which render survival to completion of the protocol unlikely in the opinion of the Investigator.
  4. The participant has a body mass index (BMI) of 17 to 40 kg/m2, inclusive, at Screening.

  5. Participant must be able to receive an injection in the deltoid of at least 1 arm.

  6. Able to attend study visits, comply with study requirements, and provide reliable and complete reports of AEs.

  7. Participants must have completed a primary vaccination series/booster against SARS CoV-2 with an authorized/approved COVID-19 vaccine, with receipt of last dose of authorized/approved vaccine (with or without boosters\[s\]) ≥ 8 weeks prior to vaccination.

  8. Female participants must be surgically sterile (ie, have undergone a hysterectomy, bilateral tubal ligation, or bilateral oophorectomy) or postmenopausal (defined as amenorrhea at least 12 consecutive months)

  9. Participants must agree to not participate in any other SARS-CoV-2 or influenza prevention or treatment studies for the duration of the study. Note: For participants who become hospitalized with COVID-19 or influenza, participation in investigational treatment studies is permitted.

If an individual meets any of the following criteria, he or she is ineligible for this study:

  1. History of laboratory-confirmed (by polymerase chain reaction \[PCR\], rapid antigen test, or rapid molecular assay) COVID-19, asymptomatic SARS-CoV-2 infection, or influenza within ≤ 8 weeks prior to Screening.

  2. Any ongoing, symptomatic acute illness requiring medical or surgical care or chronic illness that required substantive changes in medication in the past 2 months prior to Screening indicating that chronic illness/disease is not stable (at the discretion of the investigator). This includes any current workup of undiagnosed illness that could lead to a new condition.

  3. Serious chronic diseases inclusive of:

    1. Uncontrolled hypertension (NOTE: hypertension ≤ 170/100 is NOT exclusionary);
    2. Congestive heart failure requiring hospitalization within 3 months prior to Screening
    3. Chronic obstructive pulmonary disease (COPD) requiring hospitalization within 3 months prior to Screening (NOTE: stable COPD is NOT exclusionary);
    4. Within 3 months prior to Screening, evidence of unstable coronary artery disease as manifested by cardiac interventions (eg, cardiac stent placement, coronary artery bypass graft surgery), new cardiac medications for control of symptoms, or unstable angina (NOTE: stable coronary heart disease is NOT exclusionary);
    5. Hospitalization for diabetic ketoacidosis within 6 months prior to Screening
    6. Chronic kidney disease/renal requiring institution of substantive new therapy within 3 months prior to Screening
    7. Chronic clinically significant gastrointestinal and hepatic diseases requiring hospitalization or institution of substantive new therapy within 3 months prior to Screening. (for example, gastroesophageal reflux disease is NOT exclusionary)
    8. Chronic neurological diseases or neurological compromise preventing access to the study clinic, compliance with protocol, or accurate reporting of safety.
  4. Participation in research involving an investigational product (drug/biologic/device) within 90 days before planned date of vaccination.

  5. Use of COVID-19 prophylactic or treatment monoclonal antibodies or antibody cocktails within 90 days prior to planned date of vaccination.

  6. History of a serious reaction to a prior influenza vaccination or known allergy to constituents of influenza vaccines - including egg proteins - or polysorbate 80; or any known allergies to products contained in the investigational product.

  7. Any history of anaphylaxis to any prior vaccine.

  8. History of Guillain-Barré Syndrome following a previous influenza vaccine.

  9. Receipt of any vaccine in the 4 weeks preceding the study vaccination and any influenza vaccine within 2 months preceding the study vaccination. Note: Routine vaccinations will not be allowed until after study Day 21 and COVID-19 and influenza vaccination will not be allowed until after Day 84.

  10. Any known or suspected autoimmune or immunosuppressive illness, congenital or acquired, based on medical history and/or physical examination (NOTE: well-controlled hypothyroidism and mild psoriasis are not exclusionary).

  11. Chronic administration (defined as more than 14 continuous days) of immunosuppressants or other immune-modifying drugs within 6 months prior to the administration of the study vaccines. An immunosuppressant dose of glucocorticoid is defined as a systemic dose ≥ 10 mg of prednisone per day or equivalent. The use of topical, inhaled, and nasal glucocorticoids is permitted.

  12. Administration of immunoglobulins and/or any blood products within the 3 months preceding the administration of the study vaccine or during the study.

  13. Active cancer (malignancy) therapy within 1 year prior to study vaccination (with the exception of adequately treated non-melanomatous skin carcinoma or lentigo maligna and uterine cervical carcinoma in situ without evidence of disease, at the discretion of the investigator).

  14. Participants who are breastfeeding, pregnant, or who plan to become pregnant prior to the EoS.

  15. Suspected or known history of alcohol abuse or drug addiction within 2 years prior to study vaccination, which in the opinion of the investigator, might interfere with protocol compliance.

  16. Acute disease at the time of enrollment (defined as the presence of a moderate or severe illness with or without fever, or an oral temperature ≥ 38.0°C, on the planned day of vaccine administration).

  17. History of myocarditis or pericarditis.

  18. Any condition that in the opinion of the investigator would pose a health risk to the participant if enrolled or could interfere with evaluation of the vaccine or interpretation of study results (including neurologic or psychiatric conditions deemed likely to impair the quality of safety reporting).

  19. Study team member or immediate family member of any study team member (inclusive of Sponsor, Contract Research Organization, and study site personnel involved in the conduct or planning of the study).

  20. Known history of any prior motor neuropathy.

No contact data.
58 Study Locations in 2 Countries

Australian Capital Territory

Paratus Clinical Research - Canberra - PPDS, Bruce, Australian Capital Territory, 2617, Australia

Brisbane

Momentum Wellers, Wellers Hill, Brisbane, 4121, Australia

New South Wales

Paratus Clinical Research - Western Sydney - PPDS, Blacktown, New South Wales, 2148, Australia
Key Health- Bondi Junction, Bondi Junction, New South Wales, 2022, Australia
Emeritus Research - Sydney - PPDS, Botany, New South Wales, 2019, Australia
Genesis Research Services, Broadmeadow, New South Wales, 2292, Australia
Northern Beaches Clinical Research - PPDS, Brookvale, New South Wales, 2100, Australia
Northside Health, Coffs Harbour, New South Wales, 2450, Australia
East Sydney Doctors, Darlinghurst, New South Wales, 2010, Australia
Momentum Darlinghurst, Darlinghurst, New South Wales, 2010, Australia
Oztrials Clinical Research, Drummoyne, New South Wales, 2047, Australia
Paratus Clinical Research - Central Coast - PPDS, Kanwal, New South Wales, 2259, Australia
Novatrials, Kotara, New South Wales, 2289, Australia
Australian Clinical Research Network, Maroubra, New South Wales, 2035, Australia
Hunter Diabetes Centre, Merewether, New South Wales, 2291, Australia
Sutherland Shire Clinical Research - PPDS, Miranda, New South Wales, 2228, Australia
Pioneer Clinical Research - North Sydney, North Sydney, New South Wales, 2060, Australia
Taylor Square Private Clinic, Surry Hills, New South Wales, 2010, Australia
Momentum St Leonards, Sydney, New South Wales, 2065, Australia
Innovate Clinical Research Pty Ltd, Sydney, New South Wales, 2077, Australia
Wollongong Clinical Research - PPDS, Wollongong, New South Wales, 2500, Australia

Northern Territory

Menzies School of Health Research, Casuarina, Northern Territory, 0810, Australia

Queensland

University of the Sunshine Coast, Vitality Village - UniSC Clinical Trials - PPDS, Birtinya, Queensland, 4575, Australia
Momentum Taringa, Brisbane, Queensland, 4068, Australia
Griffith University Clinical Trials Unit, Griffith, Queensland, 4222, Australia
Nucleus Network Pty Ltd, Herston, Queensland, 4006, Australia
Paratus Clinical Research - Brisbane Clinic - PPDS, Herston, Queensland, 4006, Australia
Mater Hospital Brisbane, South Brisbane, Queensland, 4101, Australia

South Australia

Cmax - Ppds, Adelaide, South Australia, 5000, Australia

Victoria

Veritus Research - Emeritus - PPDS, Bayswater, Victoria, 3153, Australia
Emeritus Research -PPDS, Camberwell, Victoria, 3124, Australia
Ryrie St, Geelong, VIC 3220, Australia, Geelong, Victoria, 3220, Australia
Doherty Clinical Trials Limited, Melbourne, Victoria, 3000, Australia
Nucleus Network Limited, Melbourne, Victoria, 3004, Australia
Momentum Sunshine, Melbourne, Victoria, 3021, Australia
University of Melbourne - Melbourne, Melbourne N., Victoria, 3051, Australia

Western Australia

Institute for Respiratory Health - Midland, Midland, Western Australia, 6056, Australia
Telethon Kids Institute, Nedlands, Western Australia, 6009, Australia
CliniTrials, Perth, Western Australia, 6000, Australia

Bay of Plenty

Momentum Tauranga - PPDS, Tauranga, Bay of Plenty, 3110, New Zealand

Hawke's Bay Region

Momentum Hawke's Bay - PPDS, Hastings, Hawke's Bay Region, 4122, New Zealand

Otago

Momentum Dunedin - PPDS, Dunedin, Otago, 9016, New Zealand
Southern Clinical Trials - Totara - PCRN - PPDS, Auckland, 0600, New Zealand
Pacific Clinical Research Network - Auckland - PCRN - PPDS, Auckland, 0622, New Zealand
Optimal Clinical Trials Ltd - North Shore - PPDS, Auckland, 0632, New Zealand
Optimal Clinical Trials Ltd - PPDS, Auckland, 1010, New Zealand
Momentum Pukekohe - PPDS, Auckland, 2120, New Zealand
New Zealand Clinical Research - Christchurch - PPDS, Christchurch, 8011, New Zealand
Pacific Clinical Research Network - Christchurch - PCRN - PPDS, Christchurch, 8013, New Zealand
Lakeland Clinical Trials - Waikato - PCRN-PPDS, Hamilton, 3243, New Zealand
Momentum Lower Hutt - PPDS, Lower Hutt, New Zealand
Southern Clinical Trials - Tasman - PCRN - PPDS, Nelson, 7011, New Zealand
Momentum Palmerston North - PPDS, Palmerston North, 4414, New Zealand
Pacific Clinic Research Network - Rotorua - PCRN - PPDS, Rotorua, 3010, New Zealand
Momentum Kapiti - PPDS, Waikanae, 5036, New Zealand
Lakeland Clinical Trials - Wellington - PCRN - PPDS, Wellington, 5018, New Zealand
Momentum Wellington - PPDS, Wellington, 6021, New Zealand
Aotearoa Clinical Trials Trust, Wellington, New Zealand