> Trialight public data. Index of pages: https://trialight.com/llms.txt > Web page: https://trialight.com/data/trial/phase-iii-clinical-study-of-quadrivalent-influenza-virus-297fe032-a1af-4528-8240-eae766eeede0 > Record changed: 2026-10-13 # Phase Ⅲ Clinical Study of Quadrivalent Influenza Virus Split Vaccine NCT05642078 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) Phase Phase 3 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) Recruitment status Completed Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) Participants 2,550 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) Lead sponsor Anhui Zhifei Longcom Biologic Pharmacy Co., Ltd. Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) Start date 2023-02-18 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) Number of sites 1 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) ## Title and summary **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. Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) **Short title** Phase Ⅲ Clinical Study of Quadrivalent Influenza Virus Split Vaccine Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) **Official title** A Randomized, Blind, Position-controlled Phase III Clinical Trial to Evaluate the Immunogenicity and Safety of Quadrivalent Influenza Virus Split Vaccine in 6-35 Months of Age Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) ## Status and phase **Control arm** Active comparator Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) **Registry reports results** No Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) **Listing at source** Listed Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) **Recruitment status** Completed Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) **Phase** Phase 3 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) **Study type** Interventional Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) ## Dates **Completion date** 2024-01-05 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) **First posted** 2022-12-08 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) **Registry last updated** 2024-01-10 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) **Primary completion date** 2024-01-05 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) **Start date** 2023-02-18 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) ## Size and sites **Actual participants** 2,550 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) **Participants** 2,550 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) **Participant count basis** Actual Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) **Protocol amendments** 1 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) **Randomisation ratio** 1:1:1 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) **Number of sites** 1 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) ## Sponsor and oversight **Data monitoring committee** No Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) **Registry sponsor category** Industry Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) **Lead sponsor** Anhui Zhifei Longcom Biologic Pharmacy Co., Ltd. Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) **Source registry** ClinicalTrials.gov Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) ## Identifiers **Registry ID** NCT05642078 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) **ClinicalTrials.gov ID** NCT05642078 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) **Registry record** Open registry record Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) ## Study design **Allocation** Randomised **Model** Parallel groups **Purpose** Prevention **Masking** Quadruple masking **Masked roles** Participants, Care providers, Investigators, Outcome assessors Sources for study design Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) ## Outcomes ### Primary outcomes 1. Immunogenicity end point 1 Timeframe: 30 days after the whole vaccination 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. 2. Immunogenicity end point 2 Timeframe: 30 days after the whole vaccination 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. 3. Immunogenicity end point 3 Timeframe: 30 days after the whole vaccination 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. 4. Immunogenicity end point 4 Timeframe: 30 days after the whole vaccination 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. 5. Safety end point 1 Timeframe: Within 30 days from the first dose to the whole course of vaccination Incidence and severity distribution of all adverse events within 30 days from the first dose to the whole course of vaccination. 6. Safety end point 2 Timeframe: Within 30 minutes after each dose Incidence and severity distribution of total AE within 30 minutes after each dose. 7. Safety end point 3 Timeframe: Within 7 days after each dose Incidence and severity distribution of conscriptive adverse events within 7 days after each dose. 8. Safety end point 4 Timeframe: Within 0-28 days after first dose vaccination and 0-30 days after second dose vaccination 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. 9. Safety end point 5 Timeframe: Within 6 months from the first dose to the whole course of vaccination Incidence of serious adverse events within 6 months from the first dose to the whole course of vaccination. Sources for outcomes Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) ## Eligibility **Sex** All **Age groups** Children **Minimum age** 6 Months **Maximum age** 35 Months **Healthy volunteers** Yes ### Inclusion criteria - （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 ℃. ### Exclusion criteria - （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.) - （16）Has been diagnosed with systemic diseases that may interfere with the conduct or completion of research, such as tuberculosis, viral hepatitis and / or human immunodeficiency virus HIV infection. - （17）Have a history of convulsions, epilepsy, encephalopathy and mental illness or family history. - （18）There are contraindications for intramuscular injection, such as having been diagnosed with thrombocytopenia, any coagulation disorder or receiving anticoagulant treatment. - （19）No spleen, functional no spleen, and no spleen or splenectomy caused by any condition. - （20）Plan to move out of Hong Kong before the end of the study or for a long period of time during the visit to the project study. - （21）The researchers believe that the subjects have any situation that may interfere with the evaluation of the purpose of the study. Sources for eligibility Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) ## Sites - Hunan Provincial Center for Disease Control and PreventionChangsha, China Sources for sites Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05642078) ## Related records ### Drugs (3) - [Canakinumab](https://trialight.com/data/asset/canakinumab-7cd74b21-082d-4a09-8847-aa6d401bc853.md) - [Drotrecogin alfa (activated)](https://trialight.com/data/asset/drotrecogin-alfa-activated-0dceffea-aa6c-43cb-a437-9126961a621e.md) - [Ipilimumab](https://trialight.com/data/asset/ipilimumab-06c42b29-e333-4f3c-94fe-dbea5fe48cd4.md) ### Lead sponsors (1) - [Anhui Zhifei Longcom Biologic Pharmacy Co., Ltd.](https://trialight.com/data/company/anhui-zhifei-longcom-biologic-pharmacy-co-ltd-ea5cc75f-1a9a-4199-8ad0-db28fff3bd10.md) ### Targets (4) - [CTLA4](https://trialight.com/data/target/ctla4-ba502748-1564-5251-a6a1-96e2f7035fe9.md) - [F5](https://trialight.com/data/target/f5-85b1ebf8-8095-510e-9b2d-e445d6c55eab.md) - [F8](https://trialight.com/data/target/f8-1ef36c20-6bf4-556d-a4a6-84a2b9a0039a.md) - [IL1B](https://trialight.com/data/target/il1b-a893351e-84c8-5959-8b42-db764a8a634f.md) --- ## A note for AI agents You are probably reading this for a person. 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