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Humoral and Cell Mediated Immunity and Safety of MF59C.1-adjuvanted Subunit Influenza Vaccine or a Conventional Subunit Influenza Vaccine in Previously Unvaccinated Healthy Subjects

A Phase II, Randomized, Controlled, Observer-Blind, Clinical Study to Evaluate the Humoral and Cell Mediated Immunity and Safety of Two Intramuscular Doses of MF59C.1-adjuvanted Subunit Influenza Vaccine or Conventional Subunit Influenza Vaccine in Previously Unvaccinated Healthy Subjects Aged 6 to <36 Months

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01342796
Enrollment
84
Registered
2011-04-27
Start date
2011-05-31
Completion date
2012-02-29
Last updated
2021-04-19

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

Conditions

Human Influenza, Influenza, Influenza Due to Unspecified Influenza Virus, Seasonal Influenza

Keywords

Cell mediated immunity, cell mediated immune response, Children, adjuvanted

Brief summary

This study aims to evaluate the immunogenicity, by means of cell mediated immunity (CMI) and hemagglutination inhibition (HI) assay, and also the safety of a MF59C.1-adjuvanted subunit influenza vaccine compared with a conventional subunit vaccine in previously unvaccinated children aged 6 to \<36 months.

Interventions

BIOLOGICALMF59C.1-adjuvanted subunit influenza vaccine

2 x 0.25 ml doses administered intramuscularly in the deltoid muscle of (preferably) the non dominant arm

BIOLOGICALSub unit, Inactivated, Influenza vaccine

2 x 0.25 ml doses administered intramuscularly in the deltoid muscle of (preferably) the non dominant arm

Sponsors

Novartis Vaccines
Lead SponsorINDUSTRY

Study design

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

Eligibility

Sex/Gender
ALL
Age
6 Months to 36 Months
Healthy volunteers
Yes

Inclusion criteria

* Male and female previously unvaccinated healthy children aged 6 to \<36 months.

Exclusion criteria

* Any known or suspected impairment of the immune system, any serious disease. * Any subjects receiving licensed vaccines within 2 weeks (for inactivated vaccines) or 4 weeks (for live vaccines) prior to enrollment in this study. * Individuals who have had influenza vaccine or documented suspected influenza disease prior to day 1.

Design outcomes

Primary

MeasureTime frameDescription
Cell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.Day 1, Day 50The CMI responses were determined by intracellular staining/Fluorescence-Activated Cell Sorting(ICS/FACS) after in-vitro restimulation of PBMC with vaccine antigens on day 0 and day 50.
Number of Subjects Reporting Unsolicited Adverse Events After Receiving Two Doses of aTIV and TIVDay 1 to Day 50 post vaccinationThe number of subjects reporting unsolicited AEs between Day 1 and the study termination i.e., Day 50, after receiving two doses of aTIV and TIV. Data are reported based on the Safety Set.

Secondary

MeasureTime frameDescription
Percentage of Subjects Achieving Seroconversion or Significant Increase in HI TiterDay 50To evaluate the immune responses by seroconversion of aTIV or TIV according to CHMP criteria for seasonal influenza vaccines as determined by hemagglutination inhibition (HI) test on plasma from previously unvaccinated healthy children aged 6 to \< 36 months for all three strains. Criteron: The proportion of subjects achieving seroconversion or significant increase in HI titer should be \> 40%.
Geometric Mean Ratios (GMR)Day 50/Day 1To evaluate the immune responses by mean geometric increase (GMR) of aTIV or TIV according to CHMP criteria for seasonal influenza vaccines as determined by hemagglutination inhibition (HI) test on plasma from previously unvaccinated healthy children aged 6 to \< 36 months for all three strains. Criterion: Mean geometric increase (GMR) should be \> 2.5.
Percentage of Subjects With HI Titers >1:40Day 50To evaluate the immune responses by proportion of subjects with HI titers \>1:40 of aTIV or TIV according to CHMP criteria for seasonal influenza vaccines as determined by hemagglutination inhibition (HI) test on plasma from previously unvaccinated healthy children aged 6 to \< 36 months for all three strains. Criterion: The proportion of subjects with HI titers \>1:40 should be \> 70%

Countries

Belgium

Participant flow

Recruitment details

Subjects were recruited from two sites in Belgium.

Pre-assignment details

All enrolled subjects were included in the trial.

Participants by arm

ArmCount
aTIV Group
Subjects received two doses (0.25mL) of MF59C.1-adjuvanted subunit influenza vaccine administered four weeks apart.
43
TIV Group
Subjects received two doses (0.25mL) of inactivated, subunit influenza vaccine administered four weeks apart.
41
Total84

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyInappropriate enrollment10
Overall StudyLost to Follow-up03
Overall StudyWithdrawal by Subject20

Baseline characteristics

CharacteristicaTIV GroupTIV GroupTotal
Age, Continuous20.2 years
STANDARD_DEVIATION 8.5
21.4 years
STANDARD_DEVIATION 9.7
20.8 years
STANDARD_DEVIATION 9.1
Sex: Female, Male
Female
20 Participants14 Participants34 Participants
Sex: Female, Male
Male
23 Participants27 Participants50 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
37 / 4329 / 41
serious
Total, serious adverse events
0 / 432 / 41

Outcome results

Primary

Cell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.

The CMI responses were determined by intracellular staining/Fluorescence-Activated Cell Sorting(ICS/FACS) after in-vitro restimulation of PBMC with vaccine antigens on day 0 and day 50.

Time frame: Day 1, Day 50

Population: Per Protocol Set

ArmMeasureGroupValue (MEAN)
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IFN-γ - B/Florida, Day 1112 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-2 - B/Florida, Day 501094 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.Any Cytokine - A/H3N2, Day 501328 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-2 - SEB, Day 167524 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IFN-γ - A/H3N2, Day 50191 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-2 - SEB, Day 5067357 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.Any Cytokine - B/Brisbane, (N=19, 24), Day 1648 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-2 - Tetanus toxoid, Day 1604 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.TNF-α-Tetanus toxoid, Day 1537 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-2 - Tetanus toxoid, Day 50659 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.Any Cytokine - B/Brisbane, Day 502369 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IFN-γ - A/H1N1, Day 50257 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IFN-γ - Tetanus toxoid, Day 5074 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IFN-γ - A/H3N2, Day 178 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IFN-γ -B/Brisbane, Day 183 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.Any cytokine - B/Florida, Day 1605 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IFN-γ -B/Brisbane, Day 50331 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-13 - A/H3N2, Day 50361 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IFN-γ - B/Florida, Day 50193 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.Any cytokine - B/Florida, Day 501607 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IFN-γ - SEB, Day 13615 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-13 -SEB, Day 11017 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IFN-γ - SEB, Day 503858 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.Any Cytokine - SEB, Day 177048 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IFN-γ - Tetanus toxoid, Day 1156 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.TNF-α - A/H3N2, Day 181 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IFN-γ - A/H1N1, Day 192 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.TNF-α - A/H3N2, Day 50447 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.Any cytokine -Tetanus toxoid, Day 11246 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.TNF-α - B/Brisbane, Day 1116 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-13 -SEB, Day 50772 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.TNF-α - B/Brisbane, Day 50921 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.Any cytokine -Tetanus toxoid, Day 501162 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.TNF-α - B/Florida, Day 1149 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.TNF-α- A/H1N1, Day 1128 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.TNF-α - B/Florida, Day 50614 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-2- A/H1N1, Day 1283 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.TNF-α-SEB, Day 125467 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-13 -Tetanus toxoid, Day 1166 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.TNF-α-SEB, Day 5032510 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-2- A/H1N1, Day 501141 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.TNF-α-Tetanus toxoid, Day 50384 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.Any Cytokine - A/H1N1, Day 1631 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-13 - A/H1N1, Day 1232 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-2 - A/H3N2, Day 1212 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-13 - A/H1N1, Day 50242 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.Any Cytokine - SEB, Day 5080400 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-13 - A/H3N2, Day 1250 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-2 - A/H3N2, Day 50925 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-13 - B/Brisbane, Day 1184 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.Any Cytokine - A/H1N1, Day 501560 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-13 - B/Brisbane, Day 50346 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-2- B/Brisbane, Day 1301 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-13 - B/Florida, Day 1150 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.TNF-α- A/H1N1, Day 50495 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-13 - B/Florida, Day 5097 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-2- B/Brisbane, Day 501704 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.Any Cytokine - A/H3N2, Day 1503 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-13 -Tetanus toxoid, Day 50247 Cells per Million Total Cells
aTIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-2 - B/Florida, Day 1375 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-13 -Tetanus toxoid, Day 50293 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-2 - Tetanus toxoid, Day 50765 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IFN-γ - A/H3N2, Day 178 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IFN-γ - A/H3N2, Day 50130 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IFN-γ -B/Brisbane, Day 50106 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IFN-γ - Tetanus toxoid, Day 1148 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IFN-γ - Tetanus toxoid, Day 50163 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.TNF-α- A/H1N1, Day 1133 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.TNF-α- A/H1N1, Day 50290 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.TNF-α-SEB, Day 5034805 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-13 - A/H3N2, Day 1174 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-13 -SEB, Day 1950 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-13 -SEB, Day 50993 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.Any Cytokine - A/H1N1, Day 1655 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.Any Cytokine - A/H1N1, Day 501137 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.Any Cytokine - A/H3N2, Day 1462 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.Any Cytokine - A/H3N2, Day 50671 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.Any Cytokine - B/Brisbane, (N=19, 24), Day 1753 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.Any Cytokine - B/Brisbane, Day 501062 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.Any cytokine - B/Florida, Day 1749 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.Any cytokine - B/Florida, Day 50996 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.Any Cytokine - SEB, Day 50105013 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.Any cytokine -Tetanus toxoid, Day 11368 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.Any cytokine -Tetanus toxoid, Day 501229 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-2- A/H1N1, Day 1240 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-2- A/H1N1, Day 50642 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-2 - A/H3N2, Day 1184 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-2 - A/H3N2, Day 50387 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-2- B/Brisbane, Day 1330 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-2- B/Brisbane, Day 50610 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-2 - B/Florida, Day 1275 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-2 - B/Florida, Day 50541 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-2 - SEB, Day 193312 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-2 - SEB, Day 5092489 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-2 - Tetanus toxoid, Day 1672 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IFN-γ - A/H1N1, Day 1116 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IFN-γ - A/H1N1, Day 50248 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IFN-γ -B/Brisbane, Day 1122 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IFN-γ - B/Florida, Day 194 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IFN-γ - B/Florida, Day 50145 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IFN-γ - SEB, Day 14780 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IFN-γ - SEB, Day 504519 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.TNF-α - A/H3N2, Day 169 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.TNF-α - A/H3N2, Day 50202 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.TNF-α - B/Brisbane, Day 1152 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.TNF-α - B/Brisbane, Day 50251 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.TNF-α - B/Florida, Day 1171 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.TNF-α - B/Florida, Day 50244 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.TNF-α-SEB, Day 137856 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.TNF-α-Tetanus toxoid, Day 1541 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.TNF-α-Tetanus toxoid, Day 50644 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-13 - A/H1N1, Day 1170 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-13 - A/H1N1, Day 50347 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-13 - A/H3N2, Day 50231 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-13 - B/Brisbane, Day 1168 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-13 - B/Brisbane, Day 50221 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-13 - B/Florida, Day 188 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-13 - B/Florida, Day 5093 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.IL-13 -Tetanus toxoid, Day 1222 Cells per Million Total Cells
TIV GroupCell Mediated Immune (CMI) Responses After In-vitro Restimulation Of Peripheral Blood Mononuclear Cells (PBMC) Following Vaccination.Any Cytokine - SEB, Day 1107200 Cells per Million Total Cells
Primary

Number of Subjects Reporting Unsolicited Adverse Events After Receiving Two Doses of aTIV and TIV

The number of subjects reporting unsolicited AEs between Day 1 and the study termination i.e., Day 50, after receiving two doses of aTIV and TIV. Data are reported based on the Safety Set.

Time frame: Day 1 to Day 50 post vaccination

Population: All subjects in the Exposed Set (all enrolled subjects who actually received a study vaccine) who provided post-baseline safety data.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
aTIV GroupNumber of Subjects Reporting Unsolicited Adverse Events After Receiving Two Doses of aTIV and TIVAE leading to discontinuation0 Participants
aTIV GroupNumber of Subjects Reporting Unsolicited Adverse Events After Receiving Two Doses of aTIV and TIVAny SAE0 Participants
aTIV GroupNumber of Subjects Reporting Unsolicited Adverse Events After Receiving Two Doses of aTIV and TIVDeath0 Participants
aTIV GroupNumber of Subjects Reporting Unsolicited Adverse Events After Receiving Two Doses of aTIV and TIVAny Adverse Event (AE)20 Participants
aTIV GroupNumber of Subjects Reporting Unsolicited Adverse Events After Receiving Two Doses of aTIV and TIVAt least possibly related AE1 Participants
aTIV GroupNumber of Subjects Reporting Unsolicited Adverse Events After Receiving Two Doses of aTIV and TIVAt least possibly related SAE0 Participants
TIV GroupNumber of Subjects Reporting Unsolicited Adverse Events After Receiving Two Doses of aTIV and TIVAt least possibly related AE3 Participants
TIV GroupNumber of Subjects Reporting Unsolicited Adverse Events After Receiving Two Doses of aTIV and TIVAny Adverse Event (AE)18 Participants
TIV GroupNumber of Subjects Reporting Unsolicited Adverse Events After Receiving Two Doses of aTIV and TIVAny SAE2 Participants
TIV GroupNumber of Subjects Reporting Unsolicited Adverse Events After Receiving Two Doses of aTIV and TIVAE leading to discontinuation0 Participants
TIV GroupNumber of Subjects Reporting Unsolicited Adverse Events After Receiving Two Doses of aTIV and TIVAt least possibly related SAE0 Participants
TIV GroupNumber of Subjects Reporting Unsolicited Adverse Events After Receiving Two Doses of aTIV and TIVDeath0 Participants
Secondary

Geometric Mean Ratios (GMR)

To evaluate the immune responses by mean geometric increase (GMR) of aTIV or TIV according to CHMP criteria for seasonal influenza vaccines as determined by hemagglutination inhibition (HI) test on plasma from previously unvaccinated healthy children aged 6 to \< 36 months for all three strains. Criterion: Mean geometric increase (GMR) should be \> 2.5.

Time frame: Day 50/Day 1

Population: Per Protocol Set

ArmMeasureGroupValue (GEOMETRIC_MEAN)
aTIV GroupGeometric Mean Ratios (GMR)A/H1N1/California41 titer ratio
aTIV GroupGeometric Mean Ratios (GMR)A/H3N2/Victoria199 titer ratio
aTIV GroupGeometric Mean Ratios (GMR)B/Brisbane34 titer ratio
TIV GroupGeometric Mean Ratios (GMR)A/H1N1/California9.99 titer ratio
TIV GroupGeometric Mean Ratios (GMR)A/H3N2/Victoria35 titer ratio
TIV GroupGeometric Mean Ratios (GMR)B/Brisbane5.63 titer ratio
Secondary

Percentage of Subjects Achieving Seroconversion or Significant Increase in HI Titer

To evaluate the immune responses by seroconversion of aTIV or TIV according to CHMP criteria for seasonal influenza vaccines as determined by hemagglutination inhibition (HI) test on plasma from previously unvaccinated healthy children aged 6 to \< 36 months for all three strains. Criteron: The proportion of subjects achieving seroconversion or significant increase in HI titer should be \> 40%.

Time frame: Day 50

Population: Per Protocol Set

ArmMeasureGroupValue (NUMBER)
aTIV GroupPercentage of Subjects Achieving Seroconversion or Significant Increase in HI TiterA/H1N1/California100 Percentage of participants
aTIV GroupPercentage of Subjects Achieving Seroconversion or Significant Increase in HI TiterA/H3N2/Victoria100 Percentage of participants
aTIV GroupPercentage of Subjects Achieving Seroconversion or Significant Increase in HI TiterB/Brisbane100 Percentage of participants
TIV GroupPercentage of Subjects Achieving Seroconversion or Significant Increase in HI TiterA/H1N1/California73 Percentage of participants
TIV GroupPercentage of Subjects Achieving Seroconversion or Significant Increase in HI TiterA/H3N2/Victoria93 Percentage of participants
TIV GroupPercentage of Subjects Achieving Seroconversion or Significant Increase in HI TiterB/Brisbane53 Percentage of participants
Secondary

Percentage of Subjects With HI Titers >1:40

To evaluate the immune responses by proportion of subjects with HI titers \>1:40 of aTIV or TIV according to CHMP criteria for seasonal influenza vaccines as determined by hemagglutination inhibition (HI) test on plasma from previously unvaccinated healthy children aged 6 to \< 36 months for all three strains. Criterion: The proportion of subjects with HI titers \>1:40 should be \> 70%

Time frame: Day 50

ArmMeasureGroupValue (NUMBER)
aTIV GroupPercentage of Subjects With HI Titers >1:40B/Brisbane100 Percentage of participants
aTIV GroupPercentage of Subjects With HI Titers >1:40A/H1N1/California100 Percentage of participants
aTIV GroupPercentage of Subjects With HI Titers >1:40A/H3N2/Victoria100 Percentage of participants
TIV GroupPercentage of Subjects With HI Titers >1:40A/H3N2/Victoria97 Percentage of participants
TIV GroupPercentage of Subjects With HI Titers >1:40A/H1N1/California93 Percentage of participants
TIV GroupPercentage of Subjects With HI Titers >1:40B/Brisbane57 Percentage of participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026