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Evaluation of the Immune Response and the Safety of a Pandemic Influenza Candidate Vaccine (H1N1)

Immunogenicity and Safety of GSK Biologicals' Pandemic Influenza Candidate Vaccine GSK2340272A

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00971425
Enrollment
145
Registered
2009-09-03
Start date
2009-09-08
Completion date
2010-10-08
Last updated
2018-08-17

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Influenza

Keywords

influenza infection, GSK Bio's influenza vaccine GSK2340272A

Brief summary

The objective of the study is to evaluate the immunogenicity and safety of GSK Biologicals' investigational vaccine GSK2340272A.

Interventions

BIOLOGICALPandemrix (GSK investigational influenza GSK2340272A vaccine)

2 doses intramuscular injections

BIOLOGICALFluarix™

1 dose intramuscular injection

BIOLOGICALPlacebo

1 dose intramuscular injection

Sponsors

GlaxoSmithKline
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
SINGLE (Subject)

Eligibility

Sex/Gender
ALL
Age
61 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

* Male or female subjects 61 years of age or older at the time of the first vaccination. * Subjects who the investigator believes that they can and will comply with the requirements of the protocol. * Written informed consent obtained from the subject. * Satisfactory baseline medical assessment by history and physical examination (stable health status with no exclusionary medical or psychiatric conditions). Stable health status is defined as the absence of health event satisfying the definition of a serious adverse event, or a change in an ongoing drug therapy due to therapeutic failure or symptoms of drug toxicity, within one month prior to enrolment.

Exclusion criteria

* Previous administration of the 2009 Southern Hemisphere or 2009-2010 Northern Hemisphere influenza vaccine. * Previous administration of a pandemic influenza vaccine. * Administration of any vaccine within 30 days before first vaccination. * Planned administration of a vaccine not foreseen by the study protocol one month (minimum 30 days) after the second vaccination with the GSK2340272A candidate vaccine. * Use of any investigational or non-registered product other than the study vaccine within 30 days preceding the first dose of the study vaccines or planned use during the study period. Potential subjects in the follow-up phase of a prior investigational study may be enrolled if the investigator's judgment is that it will have no effect on safety, reactogenicity, or immunogenicity endpoints in this study, and that it does not violate the protocol requirements of the prior trial. * Presence of evidence of substance abuse or of neurological or psychiatric diagnoses which, although stable, are deemed by the investigator to render the potential subject unable/unlikely to provide accurate safety reports. * Presence of an axillary temperature \>= 37.5°C, or acute symptoms greater than mild severity on the scheduled date of first vaccination. NOTE: The subject may be vaccinated at a later date, provided symptoms have resolved, vaccination occurs within the window specified by the protocol, and all other eligibility criteria continue to be satisfied. * Diagnosed with cancer, or treatment for cancer, within 3 years. * Persons with a history of cancer who are disease-free without treatment for 3 years or more are eligible. * Persons with a history of histological-confirmed basal cell carcinoma of the skin successfully treated with local excisions only are eligible and may be enrolled within 3 years of diagnosis, but other histological types of skin cancer require a 3-year untreated and disease-free window as above. * Women who are disease free for 3 years or more after the treatment of breast cancer and receiving long-term prophylactic tamoxifen are eligible and may be enrolled. * Any confirmed or suspected immunosuppressive or immunodeficient condition including history of human immunodeficiency virus (HIV) infection. * Chronic administration of immunosuppressants or other immune modifying drugs within six months prior to the first vaccination and during the entire study period. * Receipt of any immunoglobulins and/or any blood products within 3 months preceding the first vaccination or planned administration of any of these products during the entire study period. * Any significant disorder of coagulation or treatment with warfarin derivatives or heparin. Persons receiving individual doses of low molecular weight heparin outside of 24 hours prior to vaccination are eligible. Persons receiving prophylactic antiplatelet medications, e.g., low-dose aspirin, and without a clinically-apparent bleeding tendency, are eligible. * An acute evolving neurological disorder or history of Guillain-Barré syndrome. * Serious chronic disease including any medically significant chronic pulmonary, cardiovascular, renal, neurological, psychiatric or metabolic disorder, as determined by medical history and physical examination. (Subjects suffering from seasonal allergies or asthma under inhalative treatment can be included, as well as subjects with well controlled underlying diseases). * Acute clinically significant pulmonary, cardiovascular, hepatic or renal functional abnormalities, as determined by physical examination or laboratory screening tests. * Any known or suspected allergy to any constituent of influenza vaccines; a history of anaphylactic-type reaction to any constituent of influenza vaccines; or a history of severe adverse reaction to a previous influenza vaccine. * History of chronic alcohol consumption and/or drug abuse. * Clinically or virologically confirmed influenza infection within 6 months preceding the study start. * Any conditions which, in the opinion of the investigator, prevents the subjects from participating in the study.

Design outcomes

Primary

MeasureTime frameDescription
Geometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine StrainAt Day 42Titers were expressed as GMTs. The Pandemrix vaccine strain was A/Cal/7/09.
Number of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine StrainAt Day 42The Pandemrix vaccine strain was A/Cal/7/09. The cut-off was a titer of 1:10 and this titer was considered as seropositivity.
Number of Seroconverted Subjects for Antibodies Against Pandemrix Vaccine StrainAt Day 42The Pandemrix vaccine strain was A/Cal/7/09. A subject seroconverted for haemagglutination inhibition (HI) antibodies was defined as a subject with either a prevaccination (Day 0) HI antibody titer below 1:10 and a post-vaccination titer greater than or equal to 1:40 or a prevaccination titer greater than or equal to 1:10 and at least a 4-fold increase in post-vaccination titer.
Seroconversion Factor for Antibodies Against Pandemrix Vaccine StrainAt Day 42Seroconversion Factor (SCF) is defined as the fold increase in serum HI antibody GMTs post-vaccination compared to prevaccination (Day 0). The Pandemrix vaccine strain was A/Cal/7/09.
Number of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine StrainAt Day 42The Pandemrix vaccine strain was A/Cal/7/09. A seroprotected subject was defined as a subject with a serum HI antibody titer greater than or equal to 1:40.

Secondary

MeasureTime frameDescription
Number of Subjects With Solicited Local and General Symptoms After Administration of PandemrixDuring a 7-Day (Day 0-6) follow-up period after each administration of PandemrixSolicited local symptoms were pain, redness and swelling at the injection site. Solicited general symptoms were fatigue, headache, joint pain at other location, muscle aches, shivering, sweating, temperature (defined as axillary temperature equal to or above 37.5 degrees Celsius).
Number of Subjects With Solicited Local and General Symptoms After Administration of Placebo or FluarixDuring a 7-Day (Day 0-6) follow-up period after each administration of (at Day -21 and at Day 42) placebo or FluarixSolicited local symptoms were pain, redness and swelling at the injection site. General symptoms were fatigue, headache, joint pain at other location, muscle aches, shivering, sweating, temperature (defined as axillary temperature equal to or above 37.5 degrees Celsius)
Geometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay -21, Day 0, Day 21, Day 42, Day 63, Month 6 and Month 12Pandemrix vaccine strain (A/Cal/7/09) data were assessed up to Month 12. Note that Day 42 data for Pandemrix vaccine strain were already addressed as a primary outcome measure. Fluarix vaccine strains (A/Bri/59/07, B/Bri/60/08, and A/Uru/716/07) data were only assessed up to Day 63.
Number of Subjects With Serious Adverse Events (SAEs)During the entire study period (Day 0-364)SAEs assessed include medical occurrences that result in death, are life threatening, require hospitalization or prolongation of hospitalization, result in disability/incapacity or are a congenital anomaly/birth defect in the offspring of a study subject.
Number of Subjects With AEs of Specific InterestDuring the entire study period (Day 0-364)Adverse events of specific interest included auto-immune diseases and other immune mediated disorders.
Number of Subjects With Any, Grade 3 and Related Unsolicited Adverse Events (AEs)During 21 days (Day 0-20) after each vaccinationUnsolicited AE covers any AE reported in addition to those solicited during the clinical study and any solicited symptom with onset outside the specified period of follow-up for solicited symptoms. Any: any unsolicited AE regardless of intensity or relationship to vaccination. Grade 3: unsolicited AE that prevented normal everyday activity Related: unsolicited AE assessed by the investigator as related to the vaccination
Number of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsAt Day -21, Day 0, Day 21, Day 42, Day 63, Month 6 and Month 12The cut-off was a titer of 1:10 and this titer was considered as seropositivity. Pandemrix vaccine strain (A/Cal/7/09) data were assessed up to Month 12. Note that Day 42 data for Pandemrix vaccine strain were already addressed as a primary outcome measure. Fluarix vaccine strains (A/Bri/59/07, B/Bri/60/08, and A/Uru/716/07) data were only assessed up to Day 63.
Number of Seroconverted Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsAt Day 21, Month 6 and Month 12 for Pandemrix vaccine strain, and at Day 0/Day 63 for Fluarix vaccine strains.A seroconverted subject was defined as a subject with either a prevaccination (Day 0) HI antibody titer below 1:10 and a post-vaccination titer greater than or equal to 1:40 or a prevaccination titer greater than or equal to 1:10 and at least a 4-fold increase in post-vaccination titer. Pandemrix vaccine strain (A/Cal/7/09) data were generated for Day 21, Month 6 and Month 12. Fluarix vaccine strains (A/Bri/59/07, B/Bri/60/08, and A/Uru/716/07) data were generated at 21 days after Fluarix administration, i.e. depending on the group at Day 0 or Day 63 (Day 0/Day 63).
Seroconversion Factor for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsAt Day 21, Month 6 and Month 12 for Pandemrix vaccine strain, and at Day 0/Day 63 for Fluarix vaccine strains.For the definition of seroconversion factor, please refer to the primary outcome measure. Pandemrix vaccine strain (A/Cal/7/09) data were generated for Day 21, Month 6 and Month 12. Fluarix vaccine strains (A/Bri/59/07, B/Bri/60/08, and A/Uru/716/07) data were generated at 21 days after Fluarix administration, i.e. depending on the group at Day 0 or Day 63 (Day 0/Day 63).
Number of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay -21, Day 0, Day 21, Day 42, Day 63, Month 6 and Month 12A seroprotected subject was defined as a subject with a serum HI antibody titer greater than or equal to 1:40. Pandemrix vaccine strain (A/Cal/7/09) data were assessed up to Month 12. Note that Day 42 data for Pandemrix vaccine strain were already addressed as a primary outcome measure. Fluarix vaccine strains (A/Bri/59/07, B/Bri/60/08, and A/Uru/716/07) data were only assessed up to Day 63.

Countries

Germany

Participant flow

Participants by arm

ArmCount
Placebo-Pandemrix-Fluarix Group
Subjects received one dose of placebo intramuscularly in the deltoid region of the dominant arm at Day -21, 2 doses of Pandemrix intramuscularly in the deltoid region of the non-dominant arm at Day 0 and Day 21, and 1 dose of Fluarix intramuscularly in the deltoid region of the dominant arm at Day 42.
72
Fluarix-Pandemrix-Placebo Group
Subjects received 1 dose of Fluarix intramuscularly in the deltoid region of the dominant arm at Day -21, 2 doses of Pandemrix intramuscularly in the deltoid of the non-dominant arm at Day 0 and 21, and 1 dose of placebo intramuscularly in the deltoid of the non-dominant arm at Day 42.
73
Total145

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdverse Event11
Overall StudyWithdrawal by Subject01

Baseline characteristics

CharacteristicPlacebo-Pandemrix-Fluarix GroupFluarix-Pandemrix-Placebo GroupTotal
Age, Continuous69.1 Years
STANDARD_DEVIATION 5.16
69.7 Years
STANDARD_DEVIATION 5.59
69.4 Years
STANDARD_DEVIATION 5.37
Sex: Female, Male
Female
39 Participants34 Participants73 Participants
Sex: Female, Male
Male
33 Participants39 Participants72 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
59 / 7257 / 73
serious
Total, serious adverse events
11 / 7214 / 73

Outcome results

Primary

Geometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain

Titers were expressed as GMTs. The Pandemrix vaccine strain was A/Cal/7/09.

Time frame: At Day 42

Population: The analysis was performed on the According-To-Protocol (ATP) cohort for immunogenicity , which included all evaluable subjects for whom immunogenicity results were available.

ArmMeasureValue (GEOMETRIC_MEAN)
Placebo-Pandemrix-Fluarix GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain309.8 titer
Fluarix-Pandemrix-Placebo GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain227.5 titer
Primary

Number of Seroconverted Subjects for Antibodies Against Pandemrix Vaccine Strain

The Pandemrix vaccine strain was A/Cal/7/09. A subject seroconverted for haemagglutination inhibition (HI) antibodies was defined as a subject with either a prevaccination (Day 0) HI antibody titer below 1:10 and a post-vaccination titer greater than or equal to 1:40 or a prevaccination titer greater than or equal to 1:10 and at least a 4-fold increase in post-vaccination titer.

Time frame: At Day 42

Population: The analysis was performed on the According-To-Protocol (ATP) cohort for immunogenicity , which included all evaluable subjects for whom immunogenicity results were available.

ArmMeasureValue (NUMBER)
Placebo-Pandemrix-Fluarix GroupNumber of Seroconverted Subjects for Antibodies Against Pandemrix Vaccine Strain61 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Seroconverted Subjects for Antibodies Against Pandemrix Vaccine Strain59 subjects
Primary

Number of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain

The Pandemrix vaccine strain was A/Cal/7/09. A seroprotected subject was defined as a subject with a serum HI antibody titer greater than or equal to 1:40.

Time frame: At Day 42

Population: The analysis was performed on the According-To-Protocol (ATP) cohort for immunogenicity , which included all evaluable subjects for whom immunogenicity results were available.

ArmMeasureValue (NUMBER)
Placebo-Pandemrix-Fluarix GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain64 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain67 subjects
Primary

Number of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain

The Pandemrix vaccine strain was A/Cal/7/09. The cut-off was a titer of 1:10 and this titer was considered as seropositivity.

Time frame: At Day 42

Population: The analysis was performed on the According-To-Protocol (ATP) cohort for immunogenicity , which included all evaluable subjects for whom immunogenicity results were available.

ArmMeasureValue (NUMBER)
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain64 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain67 subjects
Primary

Seroconversion Factor for Antibodies Against Pandemrix Vaccine Strain

Seroconversion Factor (SCF) is defined as the fold increase in serum HI antibody GMTs post-vaccination compared to prevaccination (Day 0). The Pandemrix vaccine strain was A/Cal/7/09.

Time frame: At Day 42

Population: The analysis was performed on the According-To-Protocol (ATP) cohort for immunogenicity , which included all evaluable subjects for whom immunogenicity results were available.

ArmMeasureValue (MEAN)
Placebo-Pandemrix-Fluarix GroupSeroconversion Factor for Antibodies Against Pandemrix Vaccine Strain33.6 fold increase
Fluarix-Pandemrix-Placebo GroupSeroconversion Factor for Antibodies Against Pandemrix Vaccine Strain16.5 fold increase
Secondary

Geometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine Strains

Pandemrix vaccine strain (A/Cal/7/09) data were assessed up to Month 12. Note that Day 42 data for Pandemrix vaccine strain were already addressed as a primary outcome measure. Fluarix vaccine strains (A/Bri/59/07, B/Bri/60/08, and A/Uru/716/07) data were only assessed up to Day 63.

Time frame: Day -21, Day 0, Day 21, Day 42, Day 63, Month 6 and Month 12

Population: The analysis was performed on the According-To-Protocol (ATP) cohort for immunogenicity , which included all evaluable subjects for whom immunogenicity results were available.

ArmMeasureGroupValue (GEOMETRIC_MEAN)
Placebo-Pandemrix-Fluarix GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63 A/Bri/59/07 (N=63;66)55.7 titer
Placebo-Pandemrix-Fluarix GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 0 A/Cal/7/09 (N=64;67)9.2 titer
Placebo-Pandemrix-Fluarix GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay -21 B/Bri/60/08 (N=64;67)120.7 titer
Placebo-Pandemrix-Fluarix GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsMonth 12 A/Cal/7/09 (N=60;64)35.6 titer
Placebo-Pandemrix-Fluarix GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 0 B/Bri/60/08 (N=64;67)118.8 titer
Placebo-Pandemrix-Fluarix GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay -21 A/Cal/7/09 (N=64;67)8.7 titer
Placebo-Pandemrix-Fluarix GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 42 B/Bri/60/08 (N=64;67)182.2 titer
Placebo-Pandemrix-Fluarix GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay -21 A/Bri/59/07 (N=64;67)23.1 titer
Placebo-Pandemrix-Fluarix GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63 B/Bri/60/08 (N=63;66)291.3 titer
Placebo-Pandemrix-Fluarix GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 21 A/Cal/7/09 (N=64;67)147.5 titer
Placebo-Pandemrix-Fluarix GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay -21 A/Uru/716/07 (N=64;67)26.2 titer
Placebo-Pandemrix-Fluarix GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 0 A/Bri/59/07 (N=64;67)22.4 titer
Placebo-Pandemrix-Fluarix GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 0 A/Uru/716/07 (N=64;67)25.5 titer
Placebo-Pandemrix-Fluarix GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsMonth 6 A/Cal/7/09 (N=60;63)102.0 titer
Placebo-Pandemrix-Fluarix GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 42 A/Uru/716/07 (N=64;67)27.1 titer
Placebo-Pandemrix-Fluarix GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 42 A/Bri/59/07 (N=64;67)32.3 titer
Placebo-Pandemrix-Fluarix GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63 A/Uru/716/07 (N=63;66)85.9 titer
Placebo-Pandemrix-Fluarix GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63 A/Cal/7/09 (N=63;66)223.8 titer
Fluarix-Pandemrix-Placebo GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63 A/Uru/716/07 (N=63;66)62.4 titer
Fluarix-Pandemrix-Placebo GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay -21 A/Cal/7/09 (N=64;67)7.4 titer
Fluarix-Pandemrix-Placebo GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 0 A/Cal/7/09 (N=64;67)13.8 titer
Fluarix-Pandemrix-Placebo GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 21 A/Cal/7/09 (N=64;67)109.6 titer
Fluarix-Pandemrix-Placebo GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsMonth 6 A/Cal/7/09 (N=60;63)74.1 titer
Fluarix-Pandemrix-Placebo GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsMonth 12 A/Cal/7/09 (N=60;64)25.7 titer
Fluarix-Pandemrix-Placebo GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay -21 A/Bri/59/07 (N=64;67)20.8 titer
Fluarix-Pandemrix-Placebo GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 0 A/Bri/59/07 (N=64;67)64.0 titer
Fluarix-Pandemrix-Placebo GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 42 A/Bri/59/07 (N=64;67)56.5 titer
Fluarix-Pandemrix-Placebo GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63 A/Bri/59/07 (N=63;66)49.8 titer
Fluarix-Pandemrix-Placebo GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay -21 B/Bri/60/08 (N=64;67)135.6 titer
Fluarix-Pandemrix-Placebo GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 0 B/Bri/60/08 (N=64;67)351.2 titer
Fluarix-Pandemrix-Placebo GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 42 B/Bri/60/08 (N=64;67)291.5 titer
Fluarix-Pandemrix-Placebo GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63 B/Bri/60/08 (N=63;66)273.3 titer
Fluarix-Pandemrix-Placebo GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay -21 A/Uru/716/07 (N=64;67)22.5 titer
Fluarix-Pandemrix-Placebo GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 0 A/Uru/716/07 (N=64;67)100.9 titer
Fluarix-Pandemrix-Placebo GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 42 A/Uru/716/07 (N=64;67)69.2 titer
Fluarix-Pandemrix-Placebo GroupGeometric Mean Titers (GMTs) of Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63 A/Cal/7/09 (N=63;66)174.0 titer
Secondary

Number of Seroconverted Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine Strains

A seroconverted subject was defined as a subject with either a prevaccination (Day 0) HI antibody titer below 1:10 and a post-vaccination titer greater than or equal to 1:40 or a prevaccination titer greater than or equal to 1:10 and at least a 4-fold increase in post-vaccination titer. Pandemrix vaccine strain (A/Cal/7/09) data were generated for Day 21, Month 6 and Month 12. Fluarix vaccine strains (A/Bri/59/07, B/Bri/60/08, and A/Uru/716/07) data were generated at 21 days after Fluarix administration, i.e. depending on the group at Day 0 or Day 63 (Day 0/Day 63).

Time frame: At Day 21, Month 6 and Month 12 for Pandemrix vaccine strain, and at Day 0/Day 63 for Fluarix vaccine strains.

Population: The analysis was performed on the According-To-Protocol (ATP) cohort for immunogenicity , which included all evaluable subjects for whom immunogenicity results were available.

ArmMeasureGroupValue (NUMBER)
Placebo-Pandemrix-Fluarix GroupNumber of Seroconverted Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 21 A/Cal/7/09 (N=64;67)57 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Seroconverted Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsMonth 6 A/Cal/7/09 (N=60;63)48 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Seroconverted Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsMonth 12 A/Cal/7/09 (N=60;64)19 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Seroconverted Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63/Day 0 A/Bri/56/07 (N=63;67)9 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Seroconverted Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63/Day 0 B/Bri/60/08 (N=63;67)4 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Seroconverted Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63/Day 0 A/Uru/716/07 (N=63;67)25 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Seroconverted Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63/Day 0 B/Bri/60/08 (N=63;67)18 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Seroconverted Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 21 A/Cal/7/09 (N=64;67)43 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Seroconverted Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63/Day 0 A/Bri/56/07 (N=63;67)21 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Seroconverted Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsMonth 6 A/Cal/7/09 (N=60;63)39 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Seroconverted Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63/Day 0 A/Uru/716/07 (N=63;67)34 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Seroconverted Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsMonth 12 A/Cal/7/09 (N=60;64)11 subjects
Secondary

Number of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine Strains

A seroprotected subject was defined as a subject with a serum HI antibody titer greater than or equal to 1:40. Pandemrix vaccine strain (A/Cal/7/09) data were assessed up to Month 12. Note that Day 42 data for Pandemrix vaccine strain were already addressed as a primary outcome measure. Fluarix vaccine strains (A/Bri/59/07, B/Bri/60/08, and A/Uru/716/07) data were only assessed up to Day 63.

Time frame: Day -21, Day 0, Day 21, Day 42, Day 63, Month 6 and Month 12

Population: The analysis was performed on the According-To-Protocol (ATP) cohort for immunogenicity , which included all evaluable subjects for whom immunogenicity results were available.

ArmMeasureGroupValue (NUMBER)
Placebo-Pandemrix-Fluarix GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 0 A/Cal/7/09 (N=64;67)9 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63 A/Bri/59/07 (N=63;66)50 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsMonth 12 A/Cal/7/09 (N=60;64)28 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay -21 B/Bri/60/08 (N=64;67)61 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 0 B/Bri/60/08 (N=64;67)61 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63 A/Cal/7/09 (N=63;66)63 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 42 B/Bri/60/08 (N=64;67)64 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay -21 A/Bri/59/07 (N=64;67)25 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63 B/Bri/60/08 (N=63;66)63 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 21 A/Cal/7/09 (N=64;67)60 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay -21 A/Uru/716/07 (N=64;67)30 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 0 A/Bri/59/07 (N=64;67)26 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 0 A/Uru/716/07 (N=64;67)29 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsMonth 6 A/Cal/7/09 (N=60;63)52 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 42 A/Uru/716/07 (N=64;67)30 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 42 A/Bri/59/07 (N=64;67)30 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63 A/Uru/716/07 (N=63;66)54 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay -21 A/Cal/7/09 (N=64;67)9 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63 A/Uru/716/07 (N=63;66)46 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay -21 A/Cal/7/09 (N=64;67)4 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 0 A/Cal/7/09 (N=64;67)12 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 21 A/Cal/7/09 (N=64;67)58 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63 A/Cal/7/09 (N=63;66)65 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsMonth 6 A/Cal/7/09 (N=60;63)53 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsMonth 12 A/Cal/7/09 (N=60;64)19 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay -21 A/Bri/59/07 (N=64;67)21 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 0 A/Bri/59/07 (N=64;67)50 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 42 A/Bri/59/07 (N=64;67)47 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63 A/Bri/59/07 (N=63;66)42 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay -21 B/Bri/60/08 (N=64;67)63 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 0 B/Bri/60/08 (N=64;67)67 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 42 B/Bri/60/08 (N=64;67)67 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63 B/Bri/60/08 (N=63;66)66 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay -21 A/Uru/716/07 (N=64;67)22 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 0 A/Uru/716/07 (N=64;67)57 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Seroprotected Subjects for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 42 A/Uru/716/07 (N=64;67)47 subjects
Secondary

Number of Subjects With AEs of Specific Interest

Adverse events of specific interest included auto-immune diseases and other immune mediated disorders.

Time frame: During the entire study period (Day 0-364)

Population: The analysis was performed on the Total Vaccinated cohort.

ArmMeasureValue (NUMBER)
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With AEs of Specific Interest0 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With AEs of Specific Interest1 subjects
Secondary

Number of Subjects With Any, Grade 3 and Related Unsolicited Adverse Events (AEs)

Unsolicited AE covers any AE reported in addition to those solicited during the clinical study and any solicited symptom with onset outside the specified period of follow-up for solicited symptoms. Any: any unsolicited AE regardless of intensity or relationship to vaccination. Grade 3: unsolicited AE that prevented normal everyday activity Related: unsolicited AE assessed by the investigator as related to the vaccination

Time frame: During 21 days (Day 0-20) after each vaccination

Population: The analysis was performed on the Total Vaccinated cohort.

ArmMeasureGroupValue (NUMBER)
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Any, Grade 3 and Related Unsolicited Adverse Events (AEs)Any33 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Any, Grade 3 and Related Unsolicited Adverse Events (AEs)Grade 34 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Any, Grade 3 and Related Unsolicited Adverse Events (AEs)Related14 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Any, Grade 3 and Related Unsolicited Adverse Events (AEs)Any37 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Any, Grade 3 and Related Unsolicited Adverse Events (AEs)Grade 310 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Any, Grade 3 and Related Unsolicited Adverse Events (AEs)Related9 subjects
Secondary

Number of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine Strains

The cut-off was a titer of 1:10 and this titer was considered as seropositivity. Pandemrix vaccine strain (A/Cal/7/09) data were assessed up to Month 12. Note that Day 42 data for Pandemrix vaccine strain were already addressed as a primary outcome measure. Fluarix vaccine strains (A/Bri/59/07, B/Bri/60/08, and A/Uru/716/07) data were only assessed up to Day 63.

Time frame: At Day -21, Day 0, Day 21, Day 42, Day 63, Month 6 and Month 12

Population: The analysis was performed on the According-To-Protocol (ATP) cohort for immunogenicity , which included all evaluable subjects for whom immunogenicity results were available.

ArmMeasureGroupValue (NUMBER)
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay -21 A/Cal/7/09 (N=64;67)22 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 0 A/Cal/7/09 (N=64;67)26 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 21 A/Cal/7/09 (N=64;67)64 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63 A/Cal/7/09 (N=63;66)63 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsMonth 6 A/Cal/7/09 (N=60;63)60 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsMonth 12 A/Cal/7/09 (N=60;64)57 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay -21 A/Bri/59/07 (N=64;67)57 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 0 A/Bri/59/07 (N=64;67)56 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 42 A/Bri/59/07 (N=64;67)62 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63 A/Bri/59/07 (N=63;66)62 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay -21 B/Bri/60/08 (N=64;67)64 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 0 B/Bri/60/08 (N=64;67)64 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 42 B/Bri/60/08 (N=64;67)64 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63 B/Bri/60/08 (N=63;66)63 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay -21 A/Uru/716/07 (N=64;67)51 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 0 A/Uru/716/07 (N=64;67)51 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 42 A/Uru/716/07 (N=64;67)57 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63 A/Uru/716/07 (N=63;66)63 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63 B/Bri/60/08 (N=63;66)66 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay -21 A/Cal/7/09 (N=64;67)21 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63 A/Bri/59/07 (N=63;66)66 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 0 A/Cal/7/09 (N=64;67)50 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63 A/Uru/716/07 (N=63;66)65 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 21 A/Cal/7/09 (N=64;67)67 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay -21 B/Bri/60/08 (N=64;67)67 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63 A/Cal/7/09 (N=63;66)66 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay -21 A/Uru/716/07 (N=64;67)52 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsMonth 6 A/Cal/7/09 (N=60;63)63 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 0 B/Bri/60/08 (N=64;67)67 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsMonth 12 A/Cal/7/09 (N=60;64)60 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 42 A/Uru/716/07 (N=64;67)66 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay -21 A/Bri/59/07 (N=64;67)58 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 42 B/Bri/60/08 (N=64;67)67 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 0 A/Bri/59/07 (N=64;67)67 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 0 A/Uru/716/07 (N=64;67)66 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With a Titer Greater Than or Equal to 1:10 for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 42 A/Bri/59/07 (N=64;67)67 subjects
Secondary

Number of Subjects With Serious Adverse Events (SAEs)

SAEs assessed include medical occurrences that result in death, are life threatening, require hospitalization or prolongation of hospitalization, result in disability/incapacity or are a congenital anomaly/birth defect in the offspring of a study subject.

Time frame: During the entire study period (Day 0-364)

Population: The analysis was performed on the Total Vaccinated cohort.

ArmMeasureValue (NUMBER)
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Serious Adverse Events (SAEs)11 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Serious Adverse Events (SAEs)14 subjects
Secondary

Number of Subjects With Solicited Local and General Symptoms After Administration of Pandemrix

Solicited local symptoms were pain, redness and swelling at the injection site. Solicited general symptoms were fatigue, headache, joint pain at other location, muscle aches, shivering, sweating, temperature (defined as axillary temperature equal to or above 37.5 degrees Celsius).

Time frame: During a 7-Day (Day 0-6) follow-up period after each administration of Pandemrix

Population: The analysis was performed on the Total Vaccinated cohort on subjects with available results

ArmMeasureGroupValue (NUMBER)
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of PandemrixFatigue22 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of PandemrixPain49 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of PandemrixRedness11 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of PandemrixSwelling8 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of PandemrixHeadache23 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of PandemrixJoint pain at other location20 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of PandemrixMuscle aches23 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of PandemrixShivering14 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of PandemrixSweating12 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of PandemrixTemperature2 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of PandemrixShivering15 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of PandemrixFatigue18 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of PandemrixSwelling11 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of PandemrixJoint pain at other location13 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of PandemrixPain43 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of PandemrixTemperature3 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of PandemrixRedness10 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of PandemrixMuscle aches22 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of PandemrixSweating13 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of PandemrixHeadache19 subjects
Secondary

Number of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarix

Solicited local symptoms were pain, redness and swelling at the injection site. General symptoms were fatigue, headache, joint pain at other location, muscle aches, shivering, sweating, temperature (defined as axillary temperature equal to or above 37.5 degrees Celsius)

Time frame: During a 7-Day (Day 0-6) follow-up period after each administration of (at Day -21 and at Day 42) placebo or Fluarix

Population: The analysis was performed on the Total Vaccinated cohort on subjects with available results.

ArmMeasureGroupValue (NUMBER)
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixpain Day -21 (N=72;72)5 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixredness Day -21 (N=72;72)2 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixswelling Day -21 (N=72;72)0 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixpain Day 42 (N=69;71)17 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixredness Day 42 (N=69;71)1 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixswelling Day 42 (N=69;71)2 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixfatigue Day -21 (N=72;72)9 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixheadache Day -21 (N=72;72)5 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixjoint pain at other location Day -21 (N=72;72)7 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixmuscle aches Day -21 (N=72;72)4 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixshivering Day -21 (N=72;72)2 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixsweating Day -21 (N=72;72)5 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixtemperature Day -21 (N=72;72)0 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixtemperature Day 42 (N=69;71)0 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixfatigue Day 42 (N=69;71)10 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixheadache Day 42 (N=69;71)10 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixjoint pain at other location Day 42 (N=69;71)8 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixmuscle aches Day 42 (N=69;71)7 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixshivering Day 42 (N=69;71)3 subjects
Placebo-Pandemrix-Fluarix GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixsweating Day -21 (N=69;71)3 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixheadache Day 42 (N=69;71)8 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixpain Day -21 (N=72;72)12 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixshivering Day -21 (N=72;72)4 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixredness Day -21 (N=72;72)1 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixshivering Day 42 (N=69;71)3 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixswelling Day -21 (N=72;72)1 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixsweating Day -21 (N=72;72)6 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixpain Day 42 (N=69;71)4 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixjoint pain at other location Day 42 (N=69;71)6 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixredness Day 42 (N=69;71)0 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixtemperature Day -21 (N=72;72)1 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixswelling Day 42 (N=69;71)0 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixtemperature Day 42 (N=69;71)0 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixfatigue Day -21 (N=72;72)7 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixmuscle aches Day 42 (N=69;71)5 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixheadache Day -21 (N=72;72)10 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixfatigue Day 42 (N=69;71)4 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixjoint pain at other location Day -21 (N=72;72)2 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixsweating Day -21 (N=69;71)4 subjects
Fluarix-Pandemrix-Placebo GroupNumber of Subjects With Solicited Local and General Symptoms After Administration of Placebo or Fluarixmuscle aches Day -21 (N=72;72)6 subjects
Secondary

Seroconversion Factor for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine Strains

For the definition of seroconversion factor, please refer to the primary outcome measure. Pandemrix vaccine strain (A/Cal/7/09) data were generated for Day 21, Month 6 and Month 12. Fluarix vaccine strains (A/Bri/59/07, B/Bri/60/08, and A/Uru/716/07) data were generated at 21 days after Fluarix administration, i.e. depending on the group at Day 0 or Day 63 (Day 0/Day 63).

Time frame: At Day 21, Month 6 and Month 12 for Pandemrix vaccine strain, and at Day 0/Day 63 for Fluarix vaccine strains.

Population: The analysis was performed on the According-To-Protocol (ATP) cohort for immunogenicity , which included all evaluable subjects for whom immunogenicity results were available.

ArmMeasureGroupValue (MEAN)
Placebo-Pandemrix-Fluarix GroupSeroconversion Factor for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 21 A/Cal/7/09 (N=64;67)16.0 fold increase
Placebo-Pandemrix-Fluarix GroupSeroconversion Factor for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsMonth 6 A/Cal/7/09 (N=60;63)10.9 fold increase
Placebo-Pandemrix-Fluarix GroupSeroconversion Factor for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsMonth 12 A/Cal/7/09 (N=60;64)3.8 fold increase
Placebo-Pandemrix-Fluarix GroupSeroconversion Factor for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63/Day 0 A/Bri/56/07 (N=63;67)1.7 fold increase
Placebo-Pandemrix-Fluarix GroupSeroconversion Factor for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63/Day 0 B/Bri/60/08 (N=63;67)1.6 fold increase
Placebo-Pandemrix-Fluarix GroupSeroconversion Factor for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63/Day 0 A/Uru/716/07 (N=63;67)3.1 fold increase
Fluarix-Pandemrix-Placebo GroupSeroconversion Factor for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63/Day 0 B/Bri/60/08 (N=63;67)2.6 fold increase
Fluarix-Pandemrix-Placebo GroupSeroconversion Factor for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 21 A/Cal/7/09 (N=64;67)7.9 fold increase
Fluarix-Pandemrix-Placebo GroupSeroconversion Factor for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63/Day 0 A/Bri/56/07 (N=63;67)3.1 fold increase
Fluarix-Pandemrix-Placebo GroupSeroconversion Factor for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsMonth 6 A/Cal/7/09 (N=60;63)5.2 fold increase
Fluarix-Pandemrix-Placebo GroupSeroconversion Factor for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsDay 63/Day 0 A/Uru/716/07 (N=63;67)4.5 fold increase
Fluarix-Pandemrix-Placebo GroupSeroconversion Factor for Antibodies Against Pandemrix Vaccine Strain and Fluarix Vaccine StrainsMonth 12 A/Cal/7/09 (N=60;64)1.8 fold increase

Source: ClinicalTrials.gov · Data processed: Mar 25, 2026