Phase Ⅲ Clinical Study of Quadrivalent Influenza Virus Split Vaccine

NCT05642078 | Completed Phase 3

• 1 other identifier: LKM-2022-FIn001
• Study Type: interventional
• Target: 2,550
• Locations: 1 country
• Sites: 1

Brief Summary

A randomized, blind, positive vaccine control trial was designed.A total of 2550 subjects aged 6-35 months were randomly assigned to the low dose (0.25ml/ dose) group, the high dose (0.5ml/ dose) group and the control group in a ratio of 1:1:1. They were inoculated with 2 doses of quadrivalent influenza virus split vaccine (experimental vaccine or control vaccine) at 0 and 28 days of immunization program to observe the Immunogenicity and safety.

Conditions

Prevention of Influenza

Outcome Measures

Primary Outcomes (9)

• Immunogenicity end point 1

  30 days after the whole vaccination, the seroconversion rate of serum Hemagglutination Inhibition antibodies of influenza viruses H1N1, H3N2, B(V) and B(Y) were observed.

  30 days after the whole vaccination

• Immunogenicity end point 2

  30 days after the whole vaccination, the geometric mean titer of serum Hemagglutination Inhibition antibodies of influenza viruses H1N1, H3N2, B(V) and B(Y) were observed.

  30 days after the whole vaccination

• Immunogenicity end point 3

  30 days after the whole vaccination, the seroprotection rate of serum Hemagglutination Inhibition antibodies of influenza viruses H1N1, H3N2, B(V) and B(Y) were observed.

  30 days after the whole vaccination

• Immunogenicity end point 4

  30 days after the whole vaccination, the geometric mean increase of serum Hemagglutination Inhibition antibodies of influenza viruses H1N1, H3N2, B(V) and B(Y) were observed.

  30 days after the whole vaccination

• Safety end point 1

  Incidence and severity distribution of all adverse events within 30 days from the first dose to the whole course of vaccination.

  Within 30 days from the first dose to the whole course of vaccination

• Safety end point 2

  Incidence and severity distribution of total AE within 30 minutes after each dose.

  Within 30 minutes after each dose

• Safety end point 3

  Incidence and severity distribution of conscriptive adverse events within 7 days after each dose.

  Within 7 days after each dose

• Safety end point 4

  Incidence and severity distribution of non-aggregative adverse events within 0-28 days after first dose vaccination and 0-30 days after second dose vaccination.

  Within 0-28 days after first dose vaccination and 0-30 days after second dose vaccination

• Safety end point 5

  Incidence of serious adverse events within 6 months from the first dose to the whole course of vaccination.

  Within 6 months from the first dose to the whole course of vaccination

Study Arms (3)

Investigational Vaccine(Low dose group)

EXPERIMENTAL

Quadrivalent influenza vaccine(Split Virion),Inactivated，Produced by Anhui Zhifei Longcom Biopharmceutical Co., Ltd.；0.25mL/branch, each contains 7.5 μg H1N1, H3N2, B(V), B(Y) hemagglutinin.Subjects were vaccinated with one dose of vaccine on day 0 and day 28 respectively.

Biological: Investigational Vaccine(0.25ml/vial)

Investigational Vaccine(High dose group)

EXPERIMENTAL

Quadrivalent influenza vaccine(Split Virion),Inactivated，Produced by Anhui Zhifei Longcom Biopharmceutical Co., Ltd.；0.5mL/branch, each contains 15 μg H1N1, H3N2, B(V), B(Y) hemagglutinin.Subjects were vaccinated with one dose of vaccine on day 0 and day 28 respectively.

Biological: Investigational Vaccine(0.5ml/vial)

Active compared Vaccine

ACTIVE COMPARATOR

Influenza Vaccine(Split Virion),Inactivated Quadrivalent,Produced by Hualan Biological Vaccine Co., Ltd.;0.25mL/branch,each contains 7.5 μg H1N1, H3N2, B(V), B(Y) hemagglutinin.Subjects were vaccinated with one dose of vaccine on day 0 and day 28 respectively.

Biological: Active compared Vaccine

Interventions

Investigational Vaccine(0.25ml/vial) BIOLOGICAL

Subjects were vaccinated with a dose of low-dose Investigational vaccine on day 0 and day 28 respectively.The site of inoculation for infants aged 6-11 months is the anterolateral thigh, and the site of inoculation for infants aged 12-35 months is the lateral deltoid muscle of the upper arm.

Investigational Vaccine(Low dose group)

Investigational Vaccine(0.5ml/vial) BIOLOGICAL

Subjects were vaccinated with a dose of high-dose Investigational vaccine on day 0 and day 28 respectively.The site of inoculation for infants aged 6-11 months is the anterolateral thigh, and the site of inoculation for infants aged 12-35 months is the lateral deltoid muscle of the upper arm.

Investigational Vaccine(High dose group)

Active compared Vaccine BIOLOGICAL

Subjects were vaccinated with a dose of active compared vaccine on day 0 and day 28 respectively.The site of inoculation for infants aged 6-11 months is the anterolateral thigh, and the site of inoculation for infants aged 12-35 months is the lateral deltoid muscle of the upper arm.

Active compared Vaccine

Eligibility Criteria

• Age: 6 Months - 35 Months
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Child (0-17)

You may qualify if:

• （1）The age at the time of joining the group is 6-35 months old, and can provide legal identification.
• （2）The legal guardian of the subject voluntarily agreed to the child's participation in the study and signed the informed consent form.
• （3）The legal guardian of the subject has the ability to understand the research procedures and to participate in the follow-up of all plans.
• （4）On the day of joining the group, the armpit temperature was less than 37.3 ℃.

You may not qualify if:

• （1）Before joining the group, they have been vaccinated against influenza in this epidemic season or have plans to receive influenza vaccination during the study period.
• （2）Suffered from influenza disease in the past 3 months (confirmed by clinical, serological or microbiological methods)
• （3）Babies (6-11 months old) are born with a gestational age of \< 37 weeks or ≥ 42 weeks.
• （4）Babies (6-11 months old) weigh less than 2.5kg or \> 4.0kg at birth and are not suitable to participate in this study.
• （5）Babies (6-11 months old) are born during abnormal labor (dystocia, instrumental delivery, excluding caesarean section) or have a history of asphyxia or neurological damage
• （6）Previous history of severe allergy to any vaccine / drug or to any component of the test vaccine (including ovalbumin, etc.), such as anaphylactic shock, anaphylactic laryngeal edema, anaphylactoid purpura, thrombocytopenic purpura, local allergic necrotic reaction (Arthus reaction), severe urticaria, etc.
• （7）Have a history of severe allergy to eggs or egg proteins, such as angioneurotic edema, dyspnea, chest tightness, or repeated vomiting due to eating eggs, or even use epinephrine or other emergency medical treatment, especially those who develop symptoms within a short period of time (minutes to hours) after eating.
• （8）Acute disease or acute attack of chronic disease occurred within 3 days before vaccination.
• （9）Before entering the group, the interval between other live vaccines was less than 7 days, and the interval between live attenuated vaccines was less than 14 days.
• （10）Use antipyretic analgesic or antiallergic drugs within 3 days before entering the group.
• （11）Have used other research or unregistered products (drugs or vaccines) within 1 month before joining the group, or plan to participate in other clinical studies after joining the group.
• （12）Long-term use of immunosuppressants or other immunomodulatory drugs within the first 3 months (defined as continuous use for more than 14 days), such as glucocorticoid dose ≥ 0.5mg/kg/ days (inhaled and topical glucocorticoids are not restricted)
• （13）Received blood or blood-related products within 6 months before joining the group (hepatitis B immunoglobulin acceptable).
• （14）Has been diagnosed with congenital or acquired immunodeficiency disease.
• （15）Suffering from serious diseases or congenital malformations that may interfere with the conduct or completion of research (including, but not limited to, respiratory diseases such as asthma or chronic bronchitis, Down syndrome, thalassemia, heart disease, nephropathy, autoimmune diseases, Guillain-Barre syndrome, severe developmental disorders, severe eczema, etc.)

Sponsors & Collaborators

• Anhui Zhifei Longcom Biologic Pharmacy Co., Ltd.: lead

Study Sites (1)

Hunan Provincial Center for Disease Control and Prevention

Changsha, Hunan, 410005, China

Location

Study Officials

• Tao Huang, Bachelor

  Hunan Provincial Center for Disease Control and Prevention

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: phase 3
• Allocation: RANDOMIZED
• Masking: QUADRUPLE
• Who Masked: PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
• Purpose: PREVENTION
• Intervention Model: PARALLEL
• Sponsor Type: INDUSTRY
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: November 25, 2022
• First Posted: December 8, 2022
• Study Start: February 18, 2023
• Primary Completion: January 5, 2024
• Study Completion: January 5, 2024
• Last Updated: January 10, 2024

Record last verified: 2023-10

Locations

CN (1)