InfluenzaPhase 3NCT01712984
Study of Intradermal Quadrivalent Influenza Vaccine in Adults Aged 18 Through 64 Years
A Phase 3 study testing Influenza Virus Vaccine USP Quadrivalent, (Zonal Purified Subvirion) 2012 2013 Formulation, Influenza Virus Vaccine USP Trivalent Types A and B (Zonal Purified Subvirion) Fluzone® Intradermal and Influenza Virus Vaccine USP Trivalent Types A and B (Zonal Purified Subvirion) Fluzone Intradermal in people with Influenza, run by Sanofi Pasteur, a Sanofi Company at 38 sites in United States.
Trial summary
The aim of the study is to demonstrate safety and immunogenicity of the quadrivalent influenza intradermal (QIV-ID) vaccine compared to the trivalent influenza vaccine (TIV) containing the B strain from the primary (Yamagata) lineage (TIV-ID1) and the trivalent influenza vaccine containing B strain from the alternate… Read more about this study
- Who is it for?
- Ages 18 to 64 yearsHealthy volunteers can take part
- Conditions the study is for
- Influenza
- What is being tested?
- Influenza Virus Vaccine USP Quadrivalent, (Zonal Purified Subvirion) 2012 2013 Formulation, Influenza Virus Vaccine USP Trivalent Types A and B (Zonal Purified Subvirion) Fluzone® Intradermal and Influenza Virus Vaccine USP Trivalent Types A and B (Zonal Purified Subvirion) Fluzone Intradermal
- Type of treatment
- Vaccines
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 3,360 participants
- Where
- 38 sitesUnited States
- Study dates
- Oct 2012to Oct 2013
- Phase
- Phase 3
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
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 to 64 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Aged 18 through 64 years on the day of inclusion
- Informed consent form (ICF) has been signed and dated
- Able to attend all scheduled visits and to comply with all trial procedures. Exclusion Criteria:
- Subject is pregnant, or lactating, or of childbearing potential (to be considered of non-childbearing potential, a female must be post-menopausal for at least 1 year, surgically sterile, or using an effective method of contraception or abstinence from at least 4 weeks prior to vaccination and until at least 4 weeks after vaccination)
- Participation at the time of trial enrollment (or in the 4 weeks preceding the trial vaccination) or planned participation during the present trial period in another clinical trial investigating a vaccine, drug, medical device, or medical procedure
- Receipt of any vaccine in the 4 weeks preceding the trial vaccination or planned receipt of any vaccine in the 4 weeks following trial vaccination
Show all 18Show fewer
- Vaccination against influenza in the past 6 months
- Receipt of immune globulins, blood or blood-derived products in the past 3 months
- Known or suspected congenital or acquired immunodeficiency; or receipt of immunosuppressive therapy, such as anti-cancer chemotherapy or radiation therapy, within the preceding 6 months; or long-term systemic corticosteroid therapy (prednisone or equivalent for more than 2 consecutive weeks within the past 3 months)
- Known systemic hypersensitivity to any of the vaccine components, or history of a life-threatening reaction to the vaccine used in the trial or to a vaccine containing any of the same substances
- History of thrombocytopenia
- Bleeding disorder or receipt of anticoagulants in the 3 weeks preceding inclusion
- Deprived of freedom by an administrative or court order, or in an emergency setting, or hospitalized involuntarily
- Current alcohol abuse or drug addiction
- Chronic illness that, in the opinion of the investigator, is at a stage where it might interfere with trial conduct or completion
- Identified as an Investigator or employee of the Investigator or trial center with direct involvement in the proposed trial, or identified as an immediate family member (i.e., parent, spouse, natural or adopted child) of the Investigator or employee with direct involvement in the proposed trial
- Personal or family history of Guillain-Barré Syndrome
- Neoplastic disease or any hematologic malignancy (except localized skin or prostate cancer that is stable at the time of vaccination in the absence of therapy, and subjects who have a history of neoplastic disease and who have been disease free for ≥ 5 years.
Who cannot join
None listed.
Trial locations and contacts
38 sites in 1 country.
38 sites in 1 country
United States38 sites
Study site
Allentown, Pennsylvania, 18102
Study site
Austin, Texas, 78745
Study site
Bensalem, Pennsylvania, 19020
Study site
Binghamton, New York, 13901
Study site
Boise, Idaho, 83642
Study site
Chandler, Arizona, 85224
Study site
Chula Vista, California, 91911
Study site
Coral Gables, Florida, 33134
Study site
Dakota Dunes, South Dakota, 57049
Study site
Fort Worth, Texas, 76107
Study site
Fort Worth, Texas, 76135
Study site
Hoover, Alabama, 35216
Study site
Huntsville, Alabama, 35802
Study site
Iowa City, Iowa, 52242
Study site
Kansas City, Missouri, 64114
Study site
Marshfield, Wisconsin, 54449
Study site
Melbourne, Florida, 32935
Study site
Mesa, Arizona, 85213
Study site
Milford, Connecticut, 06460
Study site
Mt. Pleasant, South Carolina, 29464
Study site
Omaha, Nebraska, 68134
Study site
Overland Park, Kansas, 66212
Study site
Phoenix, Arizona, 85020
Study site
Pinellas Park, Florida, 33781
Study site
Rochester, New York, 14609
Study site
Rochester, New York, 14621
Study site
Sacramento, California, 95816
Study site
Salt Lake City, Utah, 84109
Study site
Salt Lake City, Utah, 84121
Study site
San Angelo, Texas, 76904
Study site
San Diego, California, 92103
Study site
South Miami, Florida, 33143
Study site
Springfield, Missouri, 65802
Study site
St Louis, Missouri, 63104
Study site
Tucson, Arizona, 85704
Study site
Warwick, Rhode Island, 02886
Study site
West Jordan, Utah, 84088
Study site
Wichita, Kansas, 67207
About this study
Official title: Immunogenicity and Safety Trial of Quadrivalent Influenza Vaccine Administered by Intradermal Route in Adult Subjects Aged 18 Through 64 Years
The aim of the study is to demonstrate safety and immunogenicity of the quadrivalent influenza intradermal (QIV-ID) vaccine compared to the trivalent influenza vaccine (TIV) containing the B strain from the primary (Yamagata) lineage (TIV-ID1) and the trivalent influenza vaccine containing B strain from the alternate (Victoria) lineage (TIV-ID2) vaccines in producing protection against four strains of influenza virus.
Primary Objective:
Read more
- To demonstrate that QIV-ID induces an immune response (as assessed by hemagglutination inhibition (HAI) geometric mean titers (GMTs) and seroconversion rates) that is non-inferior to responses induced by TIV-ID1 and TIV-ID2 for the 4 virus strains at 28 days post-vaccination.
Secondary Objectives:
- To demonstrate that each B strain in QIV-ID induces an immune response (as assessed by HAI GMTs and seroconversion rates) that is superior to the response induced by the TIV-ID that does not contain the corresponding B strain.
- To describe the rate of post-vaccination seroprotection induced by QIV-ID and TIV-ID.
- To describe post-vaccination immunogenicity stratified by age (18-49 years and 50-64 years), race, ethnicity, gender, previous vaccination status, and baseline seropositivity status.
- To describe the safety profile for subjects who receive QIV-ID and TIV-ID.
Observational Objectives:
- To demonstrate non-inferiority of QIV-ID compared to TIV-ID in terms of all Grade 2 or Grade 3 solicited systemic reactions combined
- To demonstrate non-inferiority of QIV-ID compared to TIV-ID in terms of all Grade 3 solicited injection site reactions combined.
Read the detailed description
All participants will receive a single dose of their assigned vaccine on Day 0. A subset of the participants will be assessed for immunologic response on Day 0 before vaccination and Day 28 after vaccination. All subjects will be monitored for safety for up to 6 months after vaccination.
- Conditions
- Influenza
- Being tested
- Influenza Virus Vaccine USP Quadrivalent, (Zonal Purified Subvirion) 2012 2013 Formulation, Influenza Virus Vaccine USP Trivalent Types A and B (Zonal Purified Subvirion) Fluzone® Intradermal, Influenza Virus Vaccine USP Trivalent Types A and B (Zonal Purified Subvirion) Fluzone Intradermal
- Keywords
- Influenza, Fluzone® Intradermal vaccine, Influenza Virus Vaccine USP Quadrivalent, Influenza Virus Vaccine USP Trivalent Types A and B
- Medical subject headings
- Influenza, Human
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Influenza Virus Vaccine USP Quadrivalent, (Zonal Purified Subvirion) 2012 2013 FormulationBiological
Also called QIV ID
0.1mL, Intradermal
Influenza Virus Vaccine USP Trivalent Types A and B (Zonal Purified Subvirion) Fluzone® IntradermalBiological
Also called Fluzone® Intradermal
0.1mL, Intradermal
Influenza Virus Vaccine USP Trivalent Types A and B (Zonal Purified Subvirion) Fluzone IntradermalBiological
Also called Fluzone® Intradermal
0.1mL, Intradermal
| Study group | Role | What they receive |
|---|---|---|
| QIV ID Vaccine Group | Experimental | Participants will receive the intradermal quadrivalent influenza vaccine Receives: Biological: Influenza Virus Vaccine USP Quadrivalent, (Zonal Purified Subvirion) 2012 2013 Formulation |
| TIV ID1 Vaccine Group | Active comparator | Participants will receive the trivalent influenza vaccine containing the B strain from the primary (Yamagata) lineage Receives: Biological: Influenza Virus Vaccine USP Trivalent Types A and B (Zonal Purified Subvirion) Fluzone® Intradermal |
| TIV ID2 Group | Active comparator | Participants will receive the intradermal trivalent influenza vaccine containing B strain from the alternate (Victoria) lineage Receives: Biological: Influenza Virus Vaccine USP Trivalent Types A and B (Zonal Purified Subvirion) Fluzone Intradermal |
What is being measured
The primary outcome is the main question the study is designed to answer.
Geometric Mean Titers Against the Influenza Virus Antigens Following Vaccination With Either a Quadrivalent Influenza Vaccine or a Trivalent Influenza Vaccine Administered by Intradermal Route
Antibodies against the influenza vaccine virus antigens were measured using a Hemagglutination-inhibition (HAI) assay.
Measured: Day 28 post-vaccination
Number of Participants With Seroconversion to Influenza Virus Vaccine Antigens Following Vaccination With Either a Quadrivalent Influenza Vaccine or a Trivalent Influenza Vaccine Administered by Intradermal Route
Antibodies against the influenza vaccine virus antigens were measured using a Hemagglutination-inhibition (HAI) assay. Seroconversion was defined as titer< 10 (1/dil) on Day 0 and post injection titer ≥ 40 (1/dil) on Day 28, or titer ≥10 (1/dil) on Day 0 and a ≥4 fold increase in titer (1/dil) on Day 28).
Measured: Day 28 post-vaccination
Secondary outcomes (3)
Geometric Mean Titers Against the Influenza Virus Antigens Before and Following Vaccination With Either a Quadrivalent Influenza Vaccine or a Trivalent Influenza Vaccine Administered by Intradermal Route
Antibodies against the influenza vaccine virus antigens were measured using a Hemagglutination-inhibition (HAI) assay.
Measured: Day 0 (pre-vaccination) and Day 28 post-vaccination
Number of Participants With Seroprotection Against Influenza Vaccine Antigens Before (Baseline) and Following Vaccination With Either a Quadrivalent Influenza Vaccine or a Trivalent Influenza Vaccine Administered by Intradermal Route
Antibodies against the influenza vaccine virus antigens were measured using a Hemagglutination-inhibition (HAI) assay. Seroprotection was defined as titer ≥ 40 [1/dil] at baseline and 28 days after vaccination.
Measured: Day 0 (pre-vaccination) and Day 28 post-vaccination
Number of Participants Reporting Solicited Injection Site and Systemic Reactions Following Vaccination With Either a Quadrivalent Influenza Vaccine or a Trivalent Influenza Vaccine Administered by Intradermal Route
Solicited injection site: Pain, Erythema, Swelling, Induration, Ecchymosis, and Pruritus; Solicited systemic reactions: Fever (Temperature), Headache, Malaise, Myalgia, and Shivering. Grade 3 injection site: Pain and Pruritus Significant, prevents daily activity; Erythema, Swelling, Induration, and Ecchymosis >100 mm. Grade 3 systemic reactions: Fever ≥39˚C; Headache, Malaise, Myalgia, and Shivering Significant preventing daily activity.
Measured: Day 0 up to Day 7 post-vaccination
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted24 Oct 2012 (estimated)
- Study startOct 2012
- Primary completionJun 2013
- Study completionOct 2013
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (2)Papers the sponsor has linked to this study.
- Other trials for InfluenzaStudies of the same condition, open and under way.
- More trials run by Sanofi Pasteur, a Sanofi CompanyThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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 3
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Quadruple blind
- Who is masked
- Participant, Care provider, Investigator, Outcomes assessor
- Enrolment
- 3,360 participants (actual)
Sponsor and investigators
- Lead sponsor
- Sanofi Pasteur, a Sanofi Company
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- Medical Director, Study director, Sanofi Pasteur Inc.
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01712984
- Sponsor's protocol ID
- QID01
- Other IDs
- U1111-1124-8066
- Status last verified
- Apr 2015
- First submitted
- 22 Oct 2012
- Last updated
- 7 May 2015
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
Publications
Gorse GJ, Falsey AR, Ozol-Godfrey A, Landolfi V, Tsang PH. Safety and immunogenicity of a quadrivalent intradermal influenza vaccine in adults. Vaccine. 2015 Feb 25;33(9):1151-9. doi: 10.1016/j.vaccine.2015.01.025. Epub 2015 Jan 19.
PubMed 25613721Small RD, Ozol-Godfrey A, Yan L. On the use of nonparametric tests for comparing immunological Reverse Cumulative distribution curves (RCDCs). Vaccine. 2019 Oct 16;37(44):6737-6742. doi: 10.1016/j.vaccine.2019.09.007. Epub 2019 Sep 16.
PubMed 31537446
Study at a glance
From the registry record, last updated by the sponsor on 7 May 2015. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Immunogenicity and Safety Trial of Quadrivalent Influenza Vaccine Administered by Intradermal Route in Adult Subjects Aged 18 Through 64 Years
- ClinicalTrials.gov ID
- NCT01712984
- Acronym / sponsor ID
- QID01
- Conditions
- Influenza
- Keywords
- Influenza, Fluzone® Intradermal vaccine, Influenza Virus Vaccine USP Quadrivalent, Influenza Virus Vaccine USP Trivalent Types A and B
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 3,360 participants (actual)
- Lead sponsor
- Sanofi Pasteur, a Sanofi CompanyIndustry (pharma, biotech, devices)
- Study start
- Oct 2012
- Primary completion
- Jun 2013 (actual)
- Study completion
- Oct 2013 (actual)
- First posted
- 24 Oct 2012 (estimated)
- Results
- Posted 10 Feb 2014
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The aim of the study is to demonstrate safety and immunogenicity of the quadrivalent influenza intradermal (QIV-ID) vaccine compared to the trivalent influenza vaccine (TIV) containing the B strain from the primary (Yamagata) lineage (TIV-ID1) and the trivalent influenza vaccine containing B strain from the alternate (Victoria) lineage (TIV-ID2) vaccines in producing protection against four strains of influenza virus.
Primary Objective:
- To demonstrate that QIV-ID induces an immune response (as assessed by hemagglutination inhibition (HAI) geometric mean titers (GMTs) and seroconversion rates) that is non-inferior to responses induced by TIV-ID1 and TIV-ID2 for the 4 virus strains at 28 days post-vaccination.
Secondary Objectives:
- To demonstrate that each B strain in QIV-ID induces an immune response (as assessed by HAI GMTs and seroconversion rates) that is superior to the response induced by the TIV-ID that does not contain the corresponding B strain.
- To describe the rate of post-vaccination seroprotection induced by QIV-ID and TIV-ID.
- To describe post-vaccination immunogenicity stratified by age (18-49 years and 50-64 years), race, ethnicity, gender, previous vaccination status, and baseline seropositivity status.
- To describe the safety profile for subjects who receive QIV-ID and TIV-ID.
Observational Objectives:
- To demonstrate non-inferiority of QIV-ID compared to TIV-ID in terms of all Grade 2 or Grade 3 solicited systemic reactions combined
- To demonstrate non-inferiority of QIV-ID compared to TIV-ID in terms of all Grade 3 solicited injection site reactions combined.
Detailed description
All participants will receive a single dose of their assigned vaccine on Day 0. A subset of the participants will be assessed for immunologic response on Day 0 before vaccination and Day 28 after vaccination. All subjects will be monitored for safety for up to 6 months after vaccination.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Quadruple blind (participant, care provider, investigator, outcomes assessor)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| QIV ID Vaccine Group | Experimental | Biological: Influenza Virus Vaccine USP Quadrivalent, (Zonal Purified Subvirion) 2012 2013 FormulationParticipants will receive the intradermal quadrivalent influenza vaccine |
| TIV ID1 Vaccine Group | Active comparator | Biological: Influenza Virus Vaccine USP Trivalent Types A and B (Zonal Purified Subvirion) Fluzone® IntradermalParticipants will receive the trivalent influenza vaccine containing the B strain from the primary (Yamagata) lineage |
| TIV ID2 Group | Active comparator | Biological: Influenza Virus Vaccine USP Trivalent Types A and B (Zonal Purified Subvirion) Fluzone IntradermalParticipants will receive the intradermal trivalent influenza vaccine containing B strain from the alternate (Victoria) lineage |
Who may qualify
- Ages
- 18 to 64 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (18 listed)
- Aged 18 through 64 years on the day of inclusion
- Informed consent form (ICF) has been signed and dated
- Able to attend all scheduled visits and to comply with all trial procedures. Exclusion Criteria:
- Subject is pregnant, or lactating, or of childbearing potential (to be considered of non-childbearing potential, a female must be post-menopausal for at least 1 year, surgically sterile, or using an effective method of contraception or abstinence from at least 4 weeks prior to vaccination and until at least 4 weeks after vaccination)
- Participation at the time of trial enrollment (or in the 4 weeks preceding the trial vaccination) or planned participation during the present trial period in another clinical trial investigating a vaccine, drug, medical device, or medical procedure
Key exclusion criteria (0 listed)
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Influenza Virus Vaccine USP Quadrivalent, (Zonal Purified Subvirion) 2012 2013 FormulationAlso: QIV ID0.1mL, Intradermal | Biological | QIV ID Vaccine Group |
| Influenza Virus Vaccine USP Trivalent Types A and B (Zonal Purified Subvirion) Fluzone® IntradermalAlso: Fluzone® Intradermal0.1mL, Intradermal | Biological | TIV ID1 Vaccine Group |
| Influenza Virus Vaccine USP Trivalent Types A and B (Zonal Purified Subvirion) Fluzone IntradermalAlso: Fluzone® Intradermal0.1mL, Intradermal | Biological | TIV ID2 Group |
Primary outcome
Geometric Mean Titers Against the Influenza Virus Antigens Following Vaccination With Either a Quadrivalent Influenza Vaccine or a Trivalent Influenza Vaccine Administered by Intradermal Route
Time frame: Day 28 post-vaccination
Antibodies against the influenza vaccine virus antigens were measured using a Hemagglutination-inhibition (HAI) assay.
Number of Participants With Seroconversion to Influenza Virus Vaccine Antigens Following Vaccination With Either a Quadrivalent Influenza Vaccine or a Trivalent Influenza Vaccine Administered by Intradermal Route
Time frame: Day 28 post-vaccination
Antibodies against the influenza vaccine virus antigens were measured using a Hemagglutination-inhibition (HAI) assay. Seroconversion was defined as titer< 10 (1/dil) on Day 0 and post injection titer ≥ 40 (1/dil) on Day 28, or titer ≥10 (1/dil) on Day 0 and a ≥4 fold increase in titer (1/dil) on Day 28).
3 secondary outcomes
Geometric Mean Titers Against the Influenza Virus Antigens Before and Following Vaccination With Either a Quadrivalent Influenza Vaccine or a Trivalent Influenza Vaccine Administered by Intradermal Route
Time frame: Day 0 (pre-vaccination) and Day 28 post-vaccination
Number of Participants With Seroprotection Against Influenza Vaccine Antigens Before (Baseline) and Following Vaccination With Either a Quadrivalent Influenza Vaccine or a Trivalent Influenza Vaccine Administered by Intradermal Route
Time frame: Day 0 (pre-vaccination) and Day 28 post-vaccination
Number of Participants Reporting Solicited Injection Site and Systemic Reactions Following Vaccination With Either a Quadrivalent Influenza Vaccine or a Trivalent Influenza Vaccine Administered by Intradermal Route
Time frame: Day 0 up to Day 7 post-vaccination
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 7 May 2015.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Background: PubMed 25613721Gorse GJ, Falsey AR, Ozol-Godfrey A, Landolfi V, Tsang PH. Safety and immunogenicity of a quadrivalent intradermal influenza vaccine in adults. Vaccine. 2015 Feb 25;33(9):1151-9. doi: 10.1016/j.vaccine.2015.01.025. Epub 2015 Jan 19.
- Derived from this study: PubMed 31537446Small RD, Ozol-Godfrey A, Yan L. On the use of nonparametric tests for comparing immunological Reverse Cumulative distribution curves (RCDCs). Vaccine. 2019 Oct 16;37(44):6737-6742. doi: 10.1016/j.vaccine.2019.09.007. Epub 2019 Sep 16.
- Related InfoLink provided by the sponsor.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Medical Director study director
Sanofi Pasteur Inc.
38 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 3 study testing Influenza Virus Vaccine USP Quadrivalent, (Zonal Purified Subvirion) 2012 2013 Formulation, Influenza Virus Vaccine USP Trivalent Types A and B (Zonal Purified Subvirion) Fluzone® Intradermal and Influenza Virus Vaccine USP Trivalent Types A and B (Zonal Purified Subvirion) Fluzone Intradermal in people with Influenza, run by Sanofi Pasteur, a Sanofi Company at 38 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 18 inclusion and 0 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 7 May 2015. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 38 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 phase mean?
Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 10 Feb 2014). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
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?
Geometric Mean Titers Against the Influenza Virus Antigens Following Vaccination With Either a Quadrivalent Influenza Vaccine or a Trivalent Influenza Vaccine Administered by Intradermal Route (time frame: Day 28 post-vaccination). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT01712984, which also lists 2 linked publications.
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 7 May 2015.