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Immunogenicity of High-dose Inactivated, Split-virion Influenza Vaccine Versus Standard Fluzone Vaccine in the Elderly

Phase III Lot Consistency, Immunogenicity and Safety Study of Three Lots of Fluzone High Dose Vaccine Compared With One Lot of Standard Fluzone® in Adults ≥ 65 Years of Age.

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00391053
Enrollment
3851
Registered
2006-10-23
Start date
2006-10-31
Completion date
2008-02-29
Last updated
2016-04-14

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

Conditions

Influenza, Myxovirus Infection, Orthomyxoviridae Infection

Keywords

Influenza, Orthomyxoviruses, Inactivated Split-virion influenza vaccine, Adults

Brief summary

Compared to young adults, the elderly mount a lower antibody response to vaccination. Thus, improvement of the immune response to influenza vaccination in this age group, which is at higher risk for influenza-related morbidity and mortality, represents an important unmet need. Primary Objectives: Immunogenicity: * To demonstrate lot consistency of the Fluzone High Dose (Fluzone HD) manufacturing process through evaluation of the immune responses elicited by three different lots. * To demonstrate the superiority of Fluzone HD vaccine compared to standard-dose Fluzone® vaccine. Secondary Objectives: Immunogenicity: * To describe the seroprotection of Fluzone HD compared to that of standard dose Fluzone® vaccine. Safety: * To describe the safety profile of Fluzone HD, in terms of solicited -, unsolicited adverse and serious adverse events post-vaccination. * To describe clinical information on some additional defined criteria during the six months following vaccination.

Interventions

BIOLOGICALHigh-Dose Inactivated, Split-Virion Influenza Vaccine

0.5 mL, IM

Sponsors

Sanofi Pasteur, a Sanofi Company
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

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

Inclusion criteria

* Aged ≥ 65 years on the day of vaccination. * Informed consent form signed. * Medically stable. (Subjects may have underlying chronic conditions such as hypertension, diabetes, ischemic heart disease, or hypothyroidism, as long as their symptoms/signs are controlled. If they are on medication for a condition, the medication dose must have been stable for at least 3 weeks preceding vaccination.) * Able to attend all scheduled visits and to comply with all trial procedures.

Exclusion criteria

* Systemic hypersensitivity to eggs, chicken proteins, or any of the vaccine components, or a history of a life-threatening reaction to the standard-dose Fluzone® vaccine or a vaccine containing any of the same substances. * Congenital or history of acquired immunodeficiency, or immunosuppressive therapy such as anti-cancer chemotherapy or radiation therapy within the preceding six months. * Systemic corticosteroid therapy, as follows: Continuous use with a dosage equivalent to \> 15 mg/day of oral prednisone for 90 days preceding vaccination. Sporadic use with a dosage equivalent to \> 40 mg/day of oral prednisone for \> 14 consecutive days in the 90 days preceding vaccination. Note:Use of topical or inhalant corticosteroids is acceptable. * 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, as well as subjects who have a history of neoplastic disease and who have been disease-free for ≥ 5 years). * Current alcohol abuse or drug addiction that in the opinion of the investigator may interfere with the subject's ability to comply with trial procedures. * Receipt of blood or blood-derived products in the past three months. * Participation in a trial of a high-dose influenza vaccine in the past 12 months. * Receipt of influenza vaccine in the past six months. * Receipt of any other vaccine in the past four weeks. * Planned receipt of any other vaccine in the four weeks following the trial vaccination. * Participation in another clinical trial in the past four weeks. * Planned participation in another clinical trial during the present trial period. Note:Concomitant participation in an observational trial (not involving drugs, vaccines, or medical devices) is acceptable. * Thrombocytopenia or bleeding disorder contraindicating intramuscular (IM) vaccination. * History of Guillain-Barré syndrome. * Subject deprived of freedom by an administrative or court order, or in an emergency setting, or hospitalized without his/her consent. * An acute febrile illness (oral temperature ≥ 99.5ºF \[≥ 37.5ºC\]) within 24 hours prior to vaccination. If this contraindication exists, vaccination will be deferred until the participant has been afebrile for at least 24 hours. * Signs and symptoms of an acute infectious respiratory illness. If this exists, vaccination will be deferred until the symptoms resolve.

Design outcomes

Primary

MeasureTime frameDescription
Geometric Mean Titers (GMTs) of Hemagglutination Inhibition Antibody Titers Pre- and Post-vaccination With Fluzone® High Dose or Standard Fluzone® Vaccines.Day 0 and Day 28 Post-vaccinationAntibodies against each of three Influenza antigens (virus) in Fluzone® High-Dose and Standard Fluzone® vaccines (A/H1N1 New-Caledonia; A/H3N2 Wisconsin; and B Malaysia) were determined by the Hemagglutination inhibition assay method.
Percentage of Participants With Seroconversion Post-vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.Day 28 Post-vaccinationSeroconversion was defined as a Hemagglutination Inhibition Antibody Titers of Titer ≥40 (1/dil) on Day 28 if pre-vaccination (Day 0) titer \<10 (1/dil); or a four-fold increase of titer on Day 28, if pre-vaccination (Day 0) titer is ≥10 (1/dil) for each of the three Influenza vaccine antigens (A/H1N1 New-Caledonia; A/H3N2 Wisconsin; and B Malaysia).

Secondary

MeasureTime frameDescription
Percentage of Participants With Seroprotection Pre- and Post-Vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.Day 0 and Day 28 Post-vaccinationSeroprotection was defined as a Hemagglutination Inhibition Titers of at least 40 (≥ 1:40) for each of the Influenza vaccine antigens (A/H1N1 New-Caledonia; A/H3N2 Wisconsin; and B Malaysia) pre- or post-vaccination with Fluzone® High-Dose or Standard Fluzone® vaccines.
Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationDay 0 to Day 7 Post-vaccinationThe occurrence, time to onset, number of days of occurrence, and severity of solicited injection site reactions: Injection Site Pain, Erythema, and Swelling; Solicited systemic reactions: Fever (temperature), Headache, Malaise, and Myalgia were collected.

Countries

United States

Participant flow

Recruitment details

Participants were enrolled from 09 October 2006 to 21 December 2006 at 30 US sites.

Pre-assignment details

A total of 3851 participants who met the inclusion and exclusion criteria were randomized and vaccinated. The vaccine received by 14 participants could not be verified, they were excluded from all analyses except immunogenicity analysis. 4 participants that started the study, but had no post-vaccination assessment were also excluded from analysis.

Participants by arm

ArmCount
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1
Participants aged 65 years or older at enrollment, treated with high-dose trivalent inactivated influenza vaccine (Fluzone HD) 2006-2007 formulation, Lot 1
855
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2
Participants aged 65 years or older at enrollment, treated with high-dose trivalent inactivated influenza vaccine (Fluzone HD) 2006-2007 formulation, Lot 2
848
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3
Participants aged 65 years or older at enrollment, treated with high-dose trivalent inactivated influenza vaccine (Fluzone HD) 2006-2007 formulation, Lot 3
870
Active Comparator (Standard Fluzone®)
Participants aged 65 years or older at enrollment, treated with standard Fluzone® vaccine 2006-2007 formulation
1,260
Total3,833

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003
Overall StudyLost to Follow-up1005
Overall StudyProtocol Violation2000
Overall StudySerious Adverse Events1014
Overall StudyWithdrawal by Subject5111

Baseline characteristics

CharacteristicHigh-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Active Comparator (Standard Fluzone®)Total
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
848 Participants870 Participants855 Participants1260 Participants3833 Participants
Age, Categorical
Between 18 and 65 years
0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Continuous72.9 Years
STANDARD_DEVIATION 6.2
72.9 Years
STANDARD_DEVIATION 6.17
72.9 Years
STANDARD_DEVIATION 6.15
72.9 Years
STANDARD_DEVIATION 5.99
72.9 Years
STANDARD_DEVIATION 6.17
Region of Enrollment
United States
848 participants870 participants855 participants1260 participants3833 participants
Sex: Female, Male
Female
438 Participants445 Participants437 Participants688 Participants2008 Participants
Sex: Female, Male
Male
410 Participants425 Participants418 Participants572 Participants1825 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —— / —
other
Total, other adverse events
455 / 855454 / 848449 / 870544 / 1,260
serious
Total, serious adverse events
56 / 85556 / 84844 / 87093 / 1,260

Outcome results

Primary

Geometric Mean Titers (GMTs) of Hemagglutination Inhibition Antibody Titers Pre- and Post-vaccination With Fluzone® High Dose or Standard Fluzone® Vaccines.

Antibodies against each of three Influenza antigens (virus) in Fluzone® High-Dose and Standard Fluzone® vaccines (A/H1N1 New-Caledonia; A/H3N2 Wisconsin; and B Malaysia) were determined by the Hemagglutination inhibition assay method.

Time frame: Day 0 and Day 28 Post-vaccination

Population: The geometric mean titers was assessed in the Full Analysis Set according to the vaccine the subjects were randomized to receive. A total of 3851 participants were included in this analysis.

ArmMeasureGroupValue (GEOMETRIC_MEAN)
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Geometric Mean Titers (GMTs) of Hemagglutination Inhibition Antibody Titers Pre- and Post-vaccination With Fluzone® High Dose or Standard Fluzone® Vaccines.A/H1N1 New Caledonia Pre-Dose28.25 Titers
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Geometric Mean Titers (GMTs) of Hemagglutination Inhibition Antibody Titers Pre- and Post-vaccination With Fluzone® High Dose or Standard Fluzone® Vaccines.A/H1N1 New Caledonia Post-Dose112.77 Titers
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Geometric Mean Titers (GMTs) of Hemagglutination Inhibition Antibody Titers Pre- and Post-vaccination With Fluzone® High Dose or Standard Fluzone® Vaccines.A/H3N2 Wisconsin Pre-Dose74.53 Titers
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Geometric Mean Titers (GMTs) of Hemagglutination Inhibition Antibody Titers Pre- and Post-vaccination With Fluzone® High Dose or Standard Fluzone® Vaccines.A/H3N2 Wisconsin Post-Dose595.03 Titers
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Geometric Mean Titers (GMTs) of Hemagglutination Inhibition Antibody Titers Pre- and Post-vaccination With Fluzone® High Dose or Standard Fluzone® Vaccines.B/Malaysia Pre-Dose19.24 Titers
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Geometric Mean Titers (GMTs) of Hemagglutination Inhibition Antibody Titers Pre- and Post-vaccination With Fluzone® High Dose or Standard Fluzone® Vaccines.B/Malaysia Post-Dose68.98 Titers
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Geometric Mean Titers (GMTs) of Hemagglutination Inhibition Antibody Titers Pre- and Post-vaccination With Fluzone® High Dose or Standard Fluzone® Vaccines.B/Malaysia Post-Dose69.26 Titers
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Geometric Mean Titers (GMTs) of Hemagglutination Inhibition Antibody Titers Pre- and Post-vaccination With Fluzone® High Dose or Standard Fluzone® Vaccines.A/H3N2 Wisconsin Post-Dose628.54 Titers
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Geometric Mean Titers (GMTs) of Hemagglutination Inhibition Antibody Titers Pre- and Post-vaccination With Fluzone® High Dose or Standard Fluzone® Vaccines.A/H1N1 New Caledonia Pre-Dose29.41 Titers
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Geometric Mean Titers (GMTs) of Hemagglutination Inhibition Antibody Titers Pre- and Post-vaccination With Fluzone® High Dose or Standard Fluzone® Vaccines.A/H3N2 Wisconsin Pre-Dose77.3 Titers
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Geometric Mean Titers (GMTs) of Hemagglutination Inhibition Antibody Titers Pre- and Post-vaccination With Fluzone® High Dose or Standard Fluzone® Vaccines.A/H1N1 New Caledonia Post-Dose114.63 Titers
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Geometric Mean Titers (GMTs) of Hemagglutination Inhibition Antibody Titers Pre- and Post-vaccination With Fluzone® High Dose or Standard Fluzone® Vaccines.B/Malaysia Pre-Dose18.96 Titers
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Geometric Mean Titers (GMTs) of Hemagglutination Inhibition Antibody Titers Pre- and Post-vaccination With Fluzone® High Dose or Standard Fluzone® Vaccines.A/H1N1 New Caledonia Post-Dose120.02 Titers
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Geometric Mean Titers (GMTs) of Hemagglutination Inhibition Antibody Titers Pre- and Post-vaccination With Fluzone® High Dose or Standard Fluzone® Vaccines.A/H3N2 Wisconsin Pre-Dose72.07 Titers
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Geometric Mean Titers (GMTs) of Hemagglutination Inhibition Antibody Titers Pre- and Post-vaccination With Fluzone® High Dose or Standard Fluzone® Vaccines.A/H3N2 Wisconsin Post-Dose603.59 Titers
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Geometric Mean Titers (GMTs) of Hemagglutination Inhibition Antibody Titers Pre- and Post-vaccination With Fluzone® High Dose or Standard Fluzone® Vaccines.B/Malaysia Post-Dose68.93 Titers
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Geometric Mean Titers (GMTs) of Hemagglutination Inhibition Antibody Titers Pre- and Post-vaccination With Fluzone® High Dose or Standard Fluzone® Vaccines.B/Malaysia Pre-Dose19.78 Titers
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Geometric Mean Titers (GMTs) of Hemagglutination Inhibition Antibody Titers Pre- and Post-vaccination With Fluzone® High Dose or Standard Fluzone® Vaccines.A/H1N1 New Caledonia Pre-Dose27.86 Titers
Active Comparator (Standard Fluzone®)Geometric Mean Titers (GMTs) of Hemagglutination Inhibition Antibody Titers Pre- and Post-vaccination With Fluzone® High Dose or Standard Fluzone® Vaccines.B/Malaysia Pre-Dose18.96 Titers
Active Comparator (Standard Fluzone®)Geometric Mean Titers (GMTs) of Hemagglutination Inhibition Antibody Titers Pre- and Post-vaccination With Fluzone® High Dose or Standard Fluzone® Vaccines.B/Malaysia Post-Dose52.34 Titers
Active Comparator (Standard Fluzone®)Geometric Mean Titers (GMTs) of Hemagglutination Inhibition Antibody Titers Pre- and Post-vaccination With Fluzone® High Dose or Standard Fluzone® Vaccines.A/H1N1 New Caledonia Post-Dose67.29 Titers
Active Comparator (Standard Fluzone®)Geometric Mean Titers (GMTs) of Hemagglutination Inhibition Antibody Titers Pre- and Post-vaccination With Fluzone® High Dose or Standard Fluzone® Vaccines.A/H3N2 Wisconsin Post-Dose332.46 Titers
Active Comparator (Standard Fluzone®)Geometric Mean Titers (GMTs) of Hemagglutination Inhibition Antibody Titers Pre- and Post-vaccination With Fluzone® High Dose or Standard Fluzone® Vaccines.A/H1N1 New Caledonia Pre-Dose29.36 Titers
Active Comparator (Standard Fluzone®)Geometric Mean Titers (GMTs) of Hemagglutination Inhibition Antibody Titers Pre- and Post-vaccination With Fluzone® High Dose or Standard Fluzone® Vaccines.A/H3N2 Wisconsin Pre-Dose74.74 Titers
Primary

Percentage of Participants With Seroconversion Post-vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.

Seroconversion was defined as a Hemagglutination Inhibition Antibody Titers of Titer ≥40 (1/dil) on Day 28 if pre-vaccination (Day 0) titer \<10 (1/dil); or a four-fold increase of titer on Day 28, if pre-vaccination (Day 0) titer is ≥10 (1/dil) for each of the three Influenza vaccine antigens (A/H1N1 New-Caledonia; A/H3N2 Wisconsin; and B Malaysia).

Time frame: Day 28 Post-vaccination

Population: The immunogenicity analysis was performed on the Full Analysis Set according to the vaccine the subjects were randomized to receive. A total of 3851 participants were included in this analysis.

ArmMeasureGroupValue (NUMBER)
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Percentage of Participants With Seroconversion Post-vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.A/H1N1 New Caledonia47 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Percentage of Participants With Seroconversion Post-vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.B/Malaysia43 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Percentage of Participants With Seroconversion Post-vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.A/H3N2 Wisconsin70 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Percentage of Participants With Seroconversion Post-vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.A/H1N1 New Caledonia47 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Percentage of Participants With Seroconversion Post-vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.A/H3N2 Wisconsin68 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Percentage of Participants With Seroconversion Post-vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.B/Malaysia41 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Percentage of Participants With Seroconversion Post-vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.B/Malaysia42 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Percentage of Participants With Seroconversion Post-vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.A/H1N1 New Caledonia52 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Percentage of Participants With Seroconversion Post-vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.A/H3N2 Wisconsin70 Percentage of Participants
Active Comparator (Standard Fluzone®)Percentage of Participants With Seroconversion Post-vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.B/Malaysia30 Percentage of Participants
Active Comparator (Standard Fluzone®)Percentage of Participants With Seroconversion Post-vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.A/H3N2 Wisconsin51 Percentage of Participants
Active Comparator (Standard Fluzone®)Percentage of Participants With Seroconversion Post-vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.A/H1N1 New Caledonia23 Percentage of Participants
Secondary

Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® Vaccination

The occurrence, time to onset, number of days of occurrence, and severity of solicited injection site reactions: Injection Site Pain, Erythema, and Swelling; Solicited systemic reactions: Fever (temperature), Headache, Malaise, and Myalgia were collected.

Time frame: Day 0 to Day 7 Post-vaccination

Population: The safety analysis was performed on the Full Analysis Set according to the participants who actually received a vaccine, whether or not the subject received the assigned vaccine. A total of 3,833 participants were included in the analysis set for the evaluation of all safety.

ArmMeasureGroupValue (NUMBER)
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Erythema (≥ 5 cm)3 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Swelling9 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Swelling (≥ 5 cm)1 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Erythema16 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Solicited Injection Site Reaction41 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Pain35 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Pain (Incapacitating)1 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Solicited Systemic Reaction37 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Fever4 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Fever (>102.2 ºF or >39.0 ºC)0 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Headache17 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Headache (Prevents Daily Activities)1 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Malaise20 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Malaise (Prevents Daily Activities)1 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Myalgia23 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Myalgia (Prevents Daily Activities)1 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Pain34 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Fever3 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Myalgia (Prevents Daily Activities)1 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Headache (Prevents Daily Activities)2 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Myalgia21 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Fever (>102.2 ºF or >39.0 ºC)0 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Swelling (≥ 5 cm)2 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Headache16 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Erythema (≥ 5 cm)1 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Pain (Incapacitating)0 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Erythema15 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Swelling9 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Malaise18 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Solicited Systemic Reaction33 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Malaise (Prevents Daily Activities)2 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Solicited Injection Site Reaction42 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Pain38 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Erythema (≥ 5 cm)2 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Malaise (Prevents Daily Activities)2 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Pain (Incapacitating)0 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Solicited Systemic Reaction33 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Myalgia (Prevents Daily Activities)2 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Fever4 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Fever (>102.2 ºF or >39.0 ºC)0 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Myalgia21 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Headache17 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Headache (Prevents Daily Activities)1 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Solicited Injection Site Reaction43 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Swelling9 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Malaise16 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Swelling (≥ 5 cm)1 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Erythema14 Percentage of Participants
Active Comparator (Standard Fluzone®)Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Myalgia (Prevents Daily Activities)0 Percentage of Participants
Active Comparator (Standard Fluzone®)Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Solicited Systemic Reaction29 Percentage of Participants
Active Comparator (Standard Fluzone®)Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Swelling (≥ 5 cm)1 Percentage of Participants
Active Comparator (Standard Fluzone®)Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Solicited Injection Site Reaction31 Percentage of Participants
Active Comparator (Standard Fluzone®)Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Malaise (Prevents Daily Activities)1 Percentage of Participants
Active Comparator (Standard Fluzone®)Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Pain (Incapacitating)0 Percentage of Participants
Active Comparator (Standard Fluzone®)Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Malaise14 Percentage of Participants
Active Comparator (Standard Fluzone®)Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Swelling6 Percentage of Participants
Active Comparator (Standard Fluzone®)Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Erythema (≥ 5 cm)1 Percentage of Participants
Active Comparator (Standard Fluzone®)Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Fever (>102.2 ºF or >39.0 ºC)0 Percentage of Participants
Active Comparator (Standard Fluzone®)Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Pain24 Percentage of Participants
Active Comparator (Standard Fluzone®)Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Headache14 Percentage of Participants
Active Comparator (Standard Fluzone®)Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Myalgia18 Percentage of Participants
Active Comparator (Standard Fluzone®)Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Fever2 Percentage of Participants
Active Comparator (Standard Fluzone®)Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationAny Erythema11 Percentage of Participants
Active Comparator (Standard Fluzone®)Percentage of Participants Reporting Solicited Injection Site and Systemic Reactions After Fluzone® High-Dose or Standard Fluzone® VaccinationGrade 3 Headache (Prevents Daily Activities)0 Percentage of Participants
Secondary

Percentage of Participants With Seroprotection Pre- and Post-Vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.

Seroprotection was defined as a Hemagglutination Inhibition Titers of at least 40 (≥ 1:40) for each of the Influenza vaccine antigens (A/H1N1 New-Caledonia; A/H3N2 Wisconsin; and B Malaysia) pre- or post-vaccination with Fluzone® High-Dose or Standard Fluzone® vaccines.

Time frame: Day 0 and Day 28 Post-vaccination

Population: The immunogenicity analysis was performed on the Full Analysis Set according to the vaccine the subjects were randomized to receive. A total of 3851 participants were included in this analysis.

ArmMeasureGroupValue (NUMBER)
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Percentage of Participants With Seroprotection Pre- and Post-Vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.A/H1N1 New Caledonia Pre-Dose44 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Percentage of Participants With Seroprotection Pre- and Post-Vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.A/H1N1 New Caledonia Post-Dose91 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Percentage of Participants With Seroprotection Pre- and Post-Vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.A/H3N2 Wisconsin Pre-Dose70 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Percentage of Participants With Seroprotection Pre- and Post-Vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.B/Malaysia Pre-Dose27 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Percentage of Participants With Seroprotection Pre- and Post-Vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.B/Malaysia Post-Dose80 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 1Percentage of Participants With Seroprotection Pre- and Post-Vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.A/H3N2 Wisconsin Post-Dose99 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Percentage of Participants With Seroprotection Pre- and Post-Vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.A/H1N1 New Caledonia Post-Dose89 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Percentage of Participants With Seroprotection Pre- and Post-Vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.A/H3N2 Wisconsin Pre-Dose69 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Percentage of Participants With Seroprotection Pre- and Post-Vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.A/H3N2 Wisconsin Post-Dose99 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Percentage of Participants With Seroprotection Pre- and Post-Vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.B/Malaysia Pre-Dose28 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Percentage of Participants With Seroprotection Pre- and Post-Vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.A/H1N1 New Caledonia Pre-Dose46 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 2Percentage of Participants With Seroprotection Pre- and Post-Vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.B/Malaysia Post-Dose78 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Percentage of Participants With Seroprotection Pre- and Post-Vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.A/H3N2 Wisconsin Post-Dose99 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Percentage of Participants With Seroprotection Pre- and Post-Vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.B/Malaysia Pre-Dose30 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Percentage of Participants With Seroprotection Pre- and Post-Vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.B/Malaysia Post-Dose80 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Percentage of Participants With Seroprotection Pre- and Post-Vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.A/H1N1 New Caledonia Post-Dose90 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Percentage of Participants With Seroprotection Pre- and Post-Vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.A/H3N2 Wisconsin Pre-Dose68 Percentage of Participants
High-Dose Inactivated, Split-Virion Influenza Vaccine Lot 3Percentage of Participants With Seroprotection Pre- and Post-Vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.A/H1N1 New Caledonia Pre-Dose42 Percentage of Participants
Active Comparator (Standard Fluzone®)Percentage of Participants With Seroprotection Pre- and Post-Vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.A/H3N2 Wisconsin Pre-Dose69 Percentage of Participants
Active Comparator (Standard Fluzone®)Percentage of Participants With Seroprotection Pre- and Post-Vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.A/H3N2 Wisconsin Post-Dose97 Percentage of Participants
Active Comparator (Standard Fluzone®)Percentage of Participants With Seroprotection Pre- and Post-Vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.B/Malaysia Post-Dose68 Percentage of Participants
Active Comparator (Standard Fluzone®)Percentage of Participants With Seroprotection Pre- and Post-Vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.A/H1N1 New Caledonia Pre-Dose46 Percentage of Participants
Active Comparator (Standard Fluzone®)Percentage of Participants With Seroprotection Pre- and Post-Vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.A/H1N1 New Caledonia Post-Dose77 Percentage of Participants
Active Comparator (Standard Fluzone®)Percentage of Participants With Seroprotection Pre- and Post-Vaccination With Fluzone® High-Dose or Standard Fluzone® Vaccines.B/Malaysia Pre-Dose27 Percentage of Participants

Source: ClinicalTrials.gov · Data processed: Apr 2, 2026