Study of a Single Dose or Two Doses of a Quadrivalent Influenza Vaccine in Subjects Aged 6 Months or Older in India

Phase 3

Completed

• Conditions: Influenza
• Interventions: Biological: Quadrivalent Inactivated Influenza Vaccine (2016-2017 NH formulation), No Preservative; Biological: Quadrivalent Inactivated Influenza Vaccine (2015 SH formulation), No Preservative; Biological: Quadrivalent Inactivated Influenza Vaccine (2015-2016 NH formulation), No Preservative; Biological: Quadrivalent Inactivated Influenza Vaccine (2016 SH formulation), No Preservative

• Registration Number: NCT02451358
• Lead Sponsor: Sanofi Pasteur, a Sanofi Company

Brief Summary

The aim of the study was to generate immunogenicity and safety data in the whole population to support registration of the Quadrivalent Influenza Vaccine (QIV) in India:

Primary objective:

* To describe in each age group the immune response induced by a single injection (participants aged \>9 years) or 2 injections (participants aged 6 months to 8 years) of QIV.

Secondary objective:

* To describe in each age group the safety profile of QIV.

Detailed Description

All participants were vaccinated with the QIV (split-virion, inactivated) Northern Hemisphere (NH) or Southern Hemisphere (SH) formulations by the intramuscular (IM) route. Immunogenicity of the vaccine was assessed at baseline (Day 0) and 28 days after the last injection. Safety data were collected up to 28 days after each injection. Serious adverse events (SAEs) were collected throughout the trial.

Study Timeline

• Study First Submitted: 2015-05-14
• Study First Submitted QC: 2015-05-18
• Study First Posted: 2015-05-22
• Study Start: 2015-07-27
• Primary Completion: 2017-01-28
• Study Completion: 2017-01-28
• Results First Submitted: 2018-01-29
• Results First Submitted QC: 2018-01-29
• Results First Posted: 2018-03-01
• Status Verified: 2022-03
• Last Update Submitted: 2022-03-24
• Last Update Posted: 2022-04-19

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 400

Inclusion Criteria

• Aged 6 months or older on the day of inclusion
• For participants aged 6 to 35 months only: born at full term of pregnancy (>=37 weeks) or birth weight >=2.5 kg or both
• Informed consent form had been signed and dated by the participants / participants' parent(s) or another legally acceptable representative and by an independent witness, if required by local regulations. For participants aged 7 to 17 years of age, assent form has been signed and dated by the participants
• Participants / participants' parent/legally acceptable representative were able to attend all scheduled visits and to comply with all trial procedures

Exclusion Criteria

• For participants aged 9 years or older only: participant was pregnant, or lactating, or of childbearing potential (to be considered of non-childbearing potential, a female must be pre-menarche or post-menopausal for at least 1 year, surgically sterile, or using an effective method of contraception or abstinence from at least 4 weeks prior to vaccination and until at least 4 weeks after vaccination)
• Participation at the time of study enrollment (or in the 4 weeks preceding the first trial vaccination) or planned participation during the present trial period in another clinical trial investigating a vaccine, drug, medical device, or medical procedure
• Receipt of any vaccine in the 4 weeks preceding the first trial vaccination or planned receipt of any vaccine in the 4 weeks following any trial vaccination (except Oral Poliomyelitis Vaccine (OPV) received during national immunization days)
• For participants aged 9 years or older only: previous vaccination against influenza (in the previous 9 months) with any influenza vaccine
• For participants aged 6 months to 8 years only: previous priming with any influenza vaccine (i.e., participants who received 2 doses for at least 1 previous influenza season)
• Receipt of immune globulins, blood or blood-derived products in the past 3 months
• Known or suspected congenital or acquired immunodeficiency; or receipt of immunosuppressive therapy, such as anti-cancer chemotherapy or radiation therapy, within the preceding 6 months; or long-term systemic corticosteroid therapy (prednisone or equivalent for more than 2 consecutive weeks within the past 3 months)
• Self-reported history of seropositivity for Human Immunodeficiency Virus (HIV), Hepatitis B, or Hepatitis C, after questioning
• Known systemic hypersensitivity to any of the vaccine components, or history of a life-threatening reaction to the vaccine used in the trial or to a vaccine containing any of the same substances
• Self-reported thrombocytopenia or as reported by the parent/legally acceptable representative, contraindicating intramuscular vaccination
• Bleeding disorder, or receipt of anticoagulants in the 3 weeks preceding inclusion, contraindicating IM vaccination
• Deprived of freedom by an administrative or court order, or in an emergency setting, or hospitalized involuntarily
• For participants aged 9 years or older only: current alcohol abuse or drug addiction
• Chronic illness that, in the opinion of the Investigator, was at a stage where it might interfere with trial conduct or completion
• Moderate or severe acute illness/infection (according to Investigator judgment) on the day of vaccination or febrile illness (axillary temperature >=38.0 degree Celsius). A prospective participants should not be included in the study until the condition had resolved or the febrile event has subsided
• Identified as an Investigator or employee of the Investigator or study center with direct involvement in the proposed study, or identified as an immediate family member (i.e., parent, spouse, natural or adopted child) of the Investigator or employee with direct involvement in the proposed study

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Quadrivalent Influenza Vaccine Group 1: 6 to 35 Months	Quadrivalent Inactivated Influenza Vaccine (2016-2017 NH formulation), No Preservative	Participants aged 6 to 35 months received 2 doses of 0.25 mL QIV (2016-2017 NH formulation) intramuscularly, 1 injection each at Day 0 and 28.
Quadrivalent Influenza Vaccine Group 4: >=18 Years	Quadrivalent Inactivated Influenza Vaccine (2015 SH formulation), No Preservative	Participants aged \>=18 years received 1 dose of 0.5 mL QIV (2015 SH formulation) intramuscularly, at Day 0.
Quadrivalent Influenza Vaccine Group 3: 9 to 17 Years	Quadrivalent Inactivated Influenza Vaccine (2015-2016 NH formulation), No Preservative	Participants aged 9 to 17 years received 1 dose of 0.5 mL QIV (2015-2016 NH formulation) intramuscularly, at Day 0.
Quadrivalent Influenza Vaccine Group 2: 3 to 8 Years	Quadrivalent Inactivated Influenza Vaccine (2016 SH formulation), No Preservative	Participants aged 3 to 8 years received 2 doses of 0.5 mL QIV (2016 SH formulation) intramuscularly, 1 injection each at Day 0 and 28.

Primary Outcome Measures

Name	Time	Method
Number of Participants With Seroprotection to Influenza Vaccine Antigens	Day 0 (pre-vaccination) and 28 days post-final vaccination (post-vaccination)	Anti-influenza antibodies were measured using HAI assay for 4 strains: H1N1, H3N2, B Victoria and B Yamagata. Seroprotection was defined as an antibody titer \>=40 (1/dilution\[dil\]) at pre-vaccination and at post-final vaccination.
Number of Participants With Seroconversion or Significant Increase to Influenza Vaccine Antigens	28 days post-final vaccination (post-vaccination)	Anti-influenza antibodies were measured using HAI assay for 4 strains: H1N1, H3N2, B Victoria and B Yamagata. Seroconversion was defined as pre-vaccination titer \<10 (1/dil) and post-vaccination titer \>=40 (1/dil), and Significant increase was defined as pre-vaccination titer \>=10 (1/dil) and \>= 4-fold increase of post-vaccination titer.
Geometric Mean Titers (GMTs) of Influenza Vaccine Antibodies	Day 0 (pre-vaccination) and 28 days post-final vaccination (post-vaccination)	Anti-influenza antibodies were measured using hemagglutination inhibition (HAI) assay for 4 strains: H1N1, H3N2, B Victoria, B Yamagata.

Secondary Outcome Measures

Name	Time	Method
Number of Participants Reporting Solicited Injection Site and Systemic Reactions After Vaccination With Influenza Vaccine	Within 7 days after any vaccination	1. Solicited injection site reactions: * Age 6-23 months: Tenderness, Erythema and Swelling(Grade 3: Tenderness: cries when injected limb is moved; Erythema and Swelling:\>=50 mm); * Age \>=2 years: Pain, Erythema and Swelling (Grade 3: Pain:unable to perform usual activities \[age 2-11 years\], significant interference with daily activities \[age \>=12 years\]; Erythema and Swelling \>=50 mm \[age 2-11 years\], \>100 mm \[age \>=12 years\]); 2. Solicited systemic reactions: * Age 6-23 months: Fever, Vomiting, Crying abnormal, Drowsiness, Appetite loss, Irritability (Grade 3: Fever:\>39.5 degree Celsius; Vomiting:\>=6 episodes/24 hours; Crying abnormal:\>3 hours; Drowsiness:sleeping most of the time or difficult to wake up; Appetite loss: refuses \>=3 feeds/meals or most feeds/meals; Irritability: inconsolable); * Age \>=2 years:Fever, Headache, Malaise, Myalgia and Shivering (Grade 3:Fever\>=39.0 degree Celsius; Headache, Malaise, Myalgia and Shivering:significant interference in daily activities)